The time required for the player to glide 5m after catching the ball would be 0.073 seconds.
What is conservation of momentum principle?
The conservation of momentum principle states that in an isolated system (one in which there are no external forces acting on it), the total momentum of the system will remain constant. This principle is based on the law of conservation of energy, which states that energy cannot be created or destroyed, only transferred or transformed.
To calculate the time required for the player to glide 5m after catching the ball, we need to use the conservation of momentum principle.
The initial momentum of the system (player + ball) is 0, since the player is at rest. After catching the ball, the final momentum of the system is (72 kg) (0 m/s) + (0.145 kg) (18 m/s) = 2.61 kg m/s.
To find the final velocity of the player, we can use the equation:
Final momentum = Initial momentum + Impulse
where Impulse = force x time
The force is equal to the change in momentum of the system divided by the time it takes for the change to occur.
So, Impulse = (2.61 kg m/s - 0) / t
Also, the impulse is equal to the mass of the player multiplied by the change in velocity of the player.
So, (72 kg) (change in velocity of the player) = (2.61 kg m/s - 0) / t
Now we can calculate the time it takes for the player to glide 5m.
change in velocity = final velocity - initial velocity = 5/t
(72 kg) (5/t) = 2.61 kg m/s
t = (2.61 kg m/s) / (72 kg × 5 m/t) = 0.073 seconds
So, the player will glide 5m after catching the ball in 0.073 seconds.
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from the top of a building, object 1 with mass m is thrown straight downward, and object 2 (also with mass m ) is thrown horizontally. both are thrown with the same speed. compare the speeds with which the objects hit the ground. from the top of a building, object 1 with mass is thrown straight downward, and object 2 (also with mass ) is thrown horizontally. both are thrown with the same speed. compare the speeds with which the objects hit the ground. object 1 hits the ground with a greater speed. object 2 hits the ground with a greater speed. both objects hit the ground with the same speed.
They'll be moving at the same speed when they reach the street.Weight (W), which is a force exerted on all objects on Earth by gravity, is a force.
Identify the speed?Weight (W), which is a force exerted on all objects on Earth by gravity, is a force. A body can only accelerate through gravity (g) when it is falling freely. Because of this, velocity increases.
Weight (W), which is a force exerted on all objects on Earth by gravity, is a force.
As a result of gravity, both objects' velocities will alter.
This equation yields the same velocity for both items when one is hurled up and the other down:
where v is the end speed, v0 is the starting speed, h is the height difference between the building and the street, and g is the acceleration brought on by gravity.
Assuming upward speed to be positive.
They'll be moving at the same speed when they reach the street.
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a heat engine that accepts heat from and rejects heat to the same thermal energy reservoir is an example of a device that violates which of the following? multiple choice question. first law clausius statement of the second law kelvin-planck statement of the second law
A heat engine is in violation of the second rule of thermodynamics if it claims to have a thermal efficiency higher than the Carnot efficiency.
In science, what is an energy?Energy is characterized as having the "ability to accomplish work, which is the capacity to apply a force sufficient to move an object." Despite this unclear definition, the concept is essentially quite straightforward: electricity merely refers to the force that drives objects. Potential and kinetic energy are the two different categories.
Easy definition of energyThe ability to perform work is the most basic definition of energy. Things alter and move because of energy. It comes in many different shapes and is all around us. Cooking food requires energy.
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a 130 gg air-track glider is attached to a spring. the glider is pushed in 11.2 cmcm and released. a student with a stopwatch finds that 14.0 oscillations take 9.00 ss . for help with math skills, you may want to review: solving radical equations for general problem-solving tips and strategies for this topic, you may want to view a video tutor so
A 130 gg air-track glider is attached to a spring. the glider is pushed in 11.2 cmcm and released. a student with a stopwatch finds that 14.0 oscillations take 9.00 ss .
The period (T) of a spring-mass system can be calculated using the formula:
T = 2 * pi * sqrt(m / k)
where T is the Time period in seconds, m is the mass of the glider in kilograms, and k is the spring constant in N/m.
The frequency (f) of a spring-mass system can be calculated using the formula:
f = 1 / T
where f is the frequency in hertz (Hz) and T is the period in seconds.
The angular frequency (w) is given by :
w = 2 * pi * f
The amplitude (A) of a spring-mass system can be calculated using the formula:
A = x / (2 * pi)
where x is the displacement in meters.
You can use these formulas to find the Period, frequency, angular frequency and amplitude of the given spring-mass system.
Keep in mind that the displacement of the spring (11.2 cm) needs to be converted to meters (0.112 m) before calculating the amplitude.
Also, you have to convert the mass of the glider from gg to kg before applying the formulas.
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true/false. . dynamic viscosity relates to deformation rate of a uid in response to a shear stress. in class, we discussed how it changes with temperature for liquids and gases. here, we present dierent ways to model the temperature-viscosity relationship.
true, The rate at which a fluid deforms in response to a shear stress is referred to as its dynamic viscosity. It is a measurement of a fluid's resistance to deformation, and the Greek letter mu () is frequently used to represent it.
Absolute viscosity, commonly referred to as dynamic viscosity, is a measurement of a fluid's flow resistance. The amount of internal friction that a fluid possesses dictates how much force is necessary to move the fluid; this is a characteristic of the fluid. The amount of internal friction and force needed to move a fluid increases with its viscosity. The Greek letter mu () is frequently used to represent dynamic viscosity, which is quantified in units called pascal-seconds (Pas). It depends on temperature and pressure, and it may be influenced by things like the presence of suspended particles, dissolved gases, and fluid flow velocity. Pressure decreases may be calculated using dynamic viscosity.
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which of the following must be included in an investment advisory contract under nasaa rules? i the fact that prepaid fees will not be returned if the contract is terminated early ii the fact that assignment of the contract is only permitted with customer consent
The statement I ,II,III are the correct statement which must be be included in an investment advisory contract under nasaa rules .
State and provincial securities regulators in the United States, Canada, and Mexico are represented by the North American Securities Administrators Association (NASAA). Members of NASAA issue licences to businesses and their representatives, look into infringements of federal, state, and local laws, bring legal action when necessary, and inform the public about investment fraud. Members of NASAA take part in information exchange and multi-state enforcement activities through the association. According to NASAA regulations, the advice contract must include:
•Description of the services offered; •Term of the contract; •Formula for calculating fees; •Amount of prepaid fees to be returned if contract is terminated early; •No contract assignment is allowed without the customer's consent; •Whether the contract gives the adviser discretionary authority; and •Disclosure that the fee for managing equity securities may be higher than the fee for managing debt securities.
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Question :
Which of the following must be included in an investment advisory contract under NASAA rules? I The fact that prepaid fees will not be returned if the contract is terminated early
II The fact that assignment of the contract is only permitted with customer consent
III Whether the contract grants discretionary authority to the adviser
IV Disclosure that the fee for managing fixed income securities may be higher than for managing equity securities
A. I and II only
B. III and IV only
C. I, II, III only
D. I, II, III, IV
How does Search, Setup, Smooth apply motorcycle
The concept of Search, Setup, and Smooth applies to motorcycle riding in the following way:
Search: This refers to the rider's ability to scan the road ahead and anticipate potential hazards, such as turns, traffic, and other obstacles. This is essential for safe riding as it allows the rider to make adjustments to their speed, position, and trajectory in advance.
Setup: This refers to the rider's body position and the setup of the motorcycle. This includes the rider's posture, the position of their feet on the pegs, and the position of their hands on the handlebars. A proper setup allows the rider to maintain stability and control of the motorcycle.
Smooth: This refers to the rider's ability to make smooth and controlled movements on the motorcycle. This includes smooth braking, accelerating, and turning. Smooth riding helps to maintain stability and control, and reduces the risk of accidents.
What is the concept about?The Search, Setup, and Smooth concept is a useful framework for thinking about motorcycle riding, as it highlights the importance of awareness, body position, and control in maintaining safety and stability on the road.
In summary, It emphasizes the rider's ability to anticipate hazards, maintain proper posture and motorcycle setup, and make smooth controlled movements.
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what hanging mass (in kg) must be placed on the cord to keep the pulley from rotating (see the following figure)? the mass on the frictionless plane is 5.5 kg. the inner radius of the pulley is 20 cm, and the outer radius is 29 cm. (assume the 5.5 kg mass and the hanging mass are only connected to the inner and outer radii, respectively.)
To prevent the pulley from turning, 1.103 kg of hanging mass must be applied to the cord.
the cord's torque
It is necessary for the torque in the cord caused by the sliding mass to equal the torque caused by the hanging mass in order to prevent the pulley from turning.
These steps are used to compute the torque:
1 = 2, F1r1 = F2r2, m1gsin()r1 = m2gr2, m1sin()r1 = m2r2, and m2 = m1sin()r1/r2, respectively.
where m1 is the sliding mass.
The inner radius of the pulley is r1.
The angle of inclination of the plane, shown by r2, is the pulley's outer radius.
In order to prevent the pulley from rotating, 1.103 kg of hanging mass must be applied to the cord.
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Which of the following scenarios best describes what Erik Erikson thought someone might experience in early adulthood?p
The clearest example of what Erik Erikson believed a person might go through in early adulthood Mohammed has tried dating a few times but has not had much luck, so he has decided to give it up.
The way in which Erikson's theory handled development over the lifetime, including old age, set it apart from many others. We are driven to investigate intimate connections as young people because we want to build our own relationships. Young adulthood, the sixth stage in Erikson's theory of psychosocial development, occurs between the ages of 18 and 40. The clearest example of what Erik Erikson believed a person might go through in early adulthood Mohammed has tried dating a few times but has not had much luck, so he has given up.
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suppose you have a reaction vessel initially containing 13.5 moles of sulfur dioxide and 11.2 moles of oxygen.
When initially containing 13.5 moles of sulfur dioxide and 11.2 moles of oxygen, the remaining moles of O2 are 4.45 moles.
What is reaction?All forces occur in pairs, as described by the third of Newton's laws of motion in classical mechanics, so that if one object exerts a force on another, the second object exerts an equal and opposite reaction force on the first. A reaction force is the result of an opposite-direction action force. Newton's third law of motion addresses these two forces, referred to as action and reaction forces. Newton's third law states that there is an equal and opposite reaction to every action.
Here,
2 ℎ ℎ 11.2 O2=11.2*2=22.4 moles
mols of SO3 produced=13.5*2/2
13.5 mols
mols of O2 consumed=13.5*1/2
=6.75 mols
mols of O2 remaining=11.2-6.75
=4.45 mols of O2
The moles of O2 remaining is 4.45 moles when initially containing 13.5 moles of sulfur dioxide and 11.2 moles of oxygen.
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Complete question:
When initially containing 13.5 moles of sulfur dioxide and 11.2 moles of oxygen, the remaining moles of O2 are 4.45 moles. What is reaction? What amount of oxygen is remaining?
two tanks are participating in a battle simulation. tank a is at point (385, 870, 567) and tank b is positioned at point (795, 625, 597).two tanks are positioned on opposite corners of a piece of uneven terrain.(a)find parametric equations for the line of sight between the tanks. (use the parameter t.)(x(t), y(t), z(t))
The parametric equation for the line of sight between the tanks can be represented as: x(t) = 385 + 410t, y(t) = 870 - 245t, z(t) = 567 + 30t
The line of sight between two points can be represented as a vector that starts at one point and ends at the other point. To find the parametric equation of the line of sight, we can subtract the starting point from the ending point to find the direction vector and then add it to a starting point multiplied by the parameter 't'.
Given that tank A is positioned at point (385, 870, 567) and tank B is positioned at point (795, 625, 597), the direction vector can be calculated as follows:
(795, 625, 597) - (385, 870, 567) = (410, -245, 30)
x(t) = 385 + 410t,
y(t) = 870 - 245t
z(t) = 567 + 30t
The parameter 't' can have any real value and determines the position along the line of sight.
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forces 2i-j+k, 3i+4j+4k, 5i+3j+3k acts through points with position vector 3i+2k, 4i-5j+ak, -4i-2j+4k respectively. Find the value of a,if the system of forces is in equilibrium
Answer:
For the system of forces to be in equilibrium, the vector sum of the forces must be equal to zero. Therefore, we can set up the following equation:
(2i-j+k) + (3i+4j+4k) + (5i+3j+3k) = 0
We can also express the force vectors in terms of the position vectors of the points at which they act as follows
F = (3i+2k)×(2i-j+k) + (4i-5j+ak)×(3i+4j+4k) + (-4i-2j+4k)×(5i+3j+3k) = 0
Expanding and simplifying the equation we get
3i+2k - 2j + k - 4i +5aj +4k -5j +4k +5i +3j -3k = 0
-i +3j +3k +5aj = 0
Therefore, a = -1/5
The value of a is -1/5.
rank the six combinations of electric charges on the basis of the electric force acting on q1 . define forces pointing to the right as positive and forces pointing to the left as negative. rank in increasing order by placing the most negative on the left and the most positive on the right. to rank items as equivalent, overlap them.
Smallest are: q1 = +1 nc, q2 = +1 nc, q3 = +1 nc and q1 = -1 nc, q2 = -1 nc, q3 = -1nc
Third Largest: q1 = +1 nc, q2 = +1nc, q3 = -1 nc
Second Largest: q1 = +1 nc, q2 = -1 nc, q3 = +1 nc
Largest : q1 = +1 nc, q2 = -1 nc, q3 = -1 nc and q1 = -1 nc, q2 = +1 nc, q3 = +1 nc
(Refer to image)
Electric charge is the physical property of matter that causes charged matter to experience a force when placed in an electromagnetic field. Electric charge can be positive or negative (commonly carried by protons and electrons respectively). Like charges repel each other and unlike charges attract each other.The electrostatic force between 2 charges is; F = k•q1•q2/r²Where r is the distance between the 2 charges q1 and q2 and k is coulombs constant.
Thus;F ∝ q1•q2/r²
The net force on the charge q1 is the sum of the forces on charge q2 and q3.If the two charges are opposite, the force is an attractive force while if the two charges are similar, the force is a repulsive force.Thus, if the combination has same type of charges, i.e;(+1,+1,+1) or (-1,-1,-1), the force will be very small.
So, now the order of forces from smallest to largest is;
Smallest are: q1 = +1 nc, q2 = +1 nc, q3 = +1 nc and q1 = -1 nc, q2 = -1 nc, q3 = -1nc
Third Largest: q1 = +1 nc, q2 = +1nc, q3 = -1 nc
Second Largest: q1 = +1 nc, q2 = -1 nc, q3 = +1 nc
Largest are: q1 = +1 nc, q2 = -1 nc, q3 = -1 nc and q1 = -1 nc, q2 = +1 nc, q3 = +1 nc
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in a vacuum, light travels 300,000 km every second. examine the following figure, which shows how long it takes for light to travel particular distances, and then scroll down to the question at the end.
If the Sun's light suddenly went out, we would not notice it for at least 8 minutes from Earth. When we look at the Andromeda Galaxy, we are seeing it as it was millions of years ago. At the speed of light, communications between Earth and astronauts on the Moon would be significantly delayed.
What is vacuum?A vacuum is a volume that is devoid of substance, often known as 'free space'. Only partial vacuums are achievable in practice. A vacuum is a space in which there is no matter or where the pressure is so low that any particles in the space have no effect on any activities that are taking place. It is a state that is far below normal atmospheric pressure and is measured in pressure units (the pascal). A vacuum is defined in science as a space devoid of substance or air. That's the simple definition, however there are always some particles of stuff in a vacuum, but far fewer than the air you're inhaling.
Here,
If the Sun's light were abruptly extinguished, we would not notice it for more than 8 minutes from Earth. When we look at the Andromeda Galaxy, we are gazing back in time to how it appeared millions of years ago. There would be a substantial delay in communications between Earth and astronauts on the Moon at the speed of light.
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electrical flow of current occurs when a person or conduction object bridges gap between live conductors and the ground or between live conductors.
The given statement is true.
Current electricity is defined as the flow of electrons from one section of the circuit to another. It is a medium that provides a very convenient means for transferring energy from one place to another. Correctly used, electricity is our most versatile form of energy. Control of most electrical hazards is neither difficult or expensive, but ignoring them can cause serious consequences.Flow of current occurs when a person or a conducting object bridges the gap between live conductors and the ground or between live conductors. This action causes current to flow.This is the reasoning behind birds on high voltage wires and why they do not fry. Since the bird is only on the wire there is no conduction between ground or other live conductors. However, if I go to trim my trees and touch the wires or place my ladder on the wires, I have bridged the gap between the live conductor and the ground. Current flows from the line through my body and gets discharged into the ground.To know more about electricity visit:
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when retracting the caliper piston on an integrated parking brake system: group of answer choices apply and release the parking brake at least 10 times to retract the piston use a pry bar to gently pry it back into the bore use a special c clamp to push the piston back into the bore use a special tool to screw it back into the bore
The piston is the most important part of the brake caliper, which is a crucial part of the entire brake system. In order to stop your car, pistons must force the brake pads to make contact with the brake rotor.
The parking brake or emergency brake is typically fastened to the back wheels of a vehicle. The parking brake is typically connected to the rear drum brakes on vehicles with them using cables, as seen in Figure 14-10. Integral parking brakes are what they are known as.
It is a "motor-on-caliper" technology that operates the caliper without the use of a separate parking cable by integrating an actuator into the caliper located on the back wheel. The existing water/foot parking lever has been eliminated, and now a single button can be used to accomplish the parking function.
For those who are unaware, a parking brake that is integral means that your caliper piston serves two purposes. When you push the brake pedal, pressure is first applied to the brake pads. Second, when you use the parking brake, a ratchet mechanism applies pressure.
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An ideal gas is contained in a cylinder of fixed length and diameter. Eighty joules of heat is added while the piston is held in place. The work done by the gas on the walls of the cylinder is
A. less than 80 J
B. 80J
C. not spesified by the information given.
D. 0J
E. more than 80J
The answer is C. Option C is the correct option. Not Specified by the Information Given.
The amount of work done by the gas on the walls of the cylinder is not specified by the information given. The amount of work done by the gas on the walls of the cylinder depends on the pressure of the gas, the temperature of the gas, and the volume of the gas.
Since none of these parameters are specified, it is not possible to determine the amount of work done by the gas on the walls of the cylinder. However, it is possible to determine the change in internal energy of the gas. Since 80 J of heat was added to the gas, the change in internal energy of the gas is 80 J.
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make the selections which make the statements always true. day time when the sun is above the horizon. the sun shines only if it is daytime. you are a highly educated person if you have an electrical engineering degree. in the united states, you can vote only if you are 18 or older. you will see the mona lisa in person if you visit paris.
a. When the sun is above the horizon, it is daytime.
b. If you have a degree in electrical engineering, you are highly educated.
c. In the United States, anyone over the age of 18 can vote.
d. If you go to Paris, you can see the Mona Lisa.
a. When the sun is above the horizon, it is daytime. The sun is usually visible in the sky during the day and provides light to the earth. However, there are exceptions. B. During a solar eclipse or at the poles where the sun may not be visible for a period of time.
b. If you have a degree in electrical engineering, you are highly educated. This statement is not necessarily true, as a degree in electrical engineering does not necessarily mean that the person is highly educated.
A person may have a degree in electrical engineering, but may not have knowledge or skills in other areas.
c. In the United States, anyone over the age of 18 can vote. This statement is true. The 26th Amendment to the United States Constitution gives citizens over the age of 18 the right to vote.
d. If you go to Paris, you can see the Mona Lisa. This statement is not necessarily true. The Mona Lisa is a famous painting and is on display at the Louvre Museum in Paris, but there are many other works of art and attractions in the city and there is no guarantee that you will see the Mona Lisa during your visit.
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1. This spiral wishing well is a great way to demonstrate a gravity field. Explain how the well is a good representation of a gravitational field AND how it is an incorrect representation of a gravitational field.
2. Imagine a proton (mass = 1.67 x 10-27 kg) and an electron (mass = 9.11 x10-31 kg) are moving up this page at the same speed, side by side. At some point in their travels, they run into an electric field that is pointed to the right. What happens to the paths of the proton and electron when they enter this field? Will the proton be moving faster or the electron?
3. Halley’s Comet will be visible from the Earth again in 2062. This comet is famous for it’s beautiful tail and easy visibility from Earth. Explain using Einstein’s explanation of Gravity why the comet only appears every 76 years.
4.Other than the examples listed in the previous questions, where else have you come across the topics we have discussed in class this week? Be specific!
Explanation:
A spiral wishing well can be a good representation of a gravitational field in the sense that it demonstrates how objects are attracted to a central point, which is similar to how objects are attracted to a massive object in a gravitational field. The well also shows how the force of gravity increases as objects get closer to the center, which is consistent with the inverse square law of gravity. However, the well is an incorrect representation of a gravitational field in the sense that it is not a three-dimensional representation of the field, but rather a two-dimensional representation. Additionally, the well does not take into account the fact that gravity is a force that acts between all objects with mass, not just those that are close to a central point.
When the proton and electron enter the electric field that is pointed to the right, the proton will be deflected to the right and the electron will be deflected to the left. This is because the proton has a positive charge and the electron has a negative charge, and opposite charges are attracted to each other. The proton and electron will move at the same speed because the electric field does not affect their speed, only their direction of motion.
According to Einstein's theory of general relativity, the orbit of Halley's Comet is determined by the curvature of spacetime caused by the mass of the sun and other celestial bodies. The comet follows an elliptical orbit around the sun, with the sun at one of the foci of the ellipse. The shape of the orbit is determined by the mass of the sun, the distance of the comet from the sun, and the velocity of the comet.
The period of the orbit of Halley's Comet is 76 years, which means that the comet takes 76 years to complete one orbit around the sun. This period is determined by the distance of the comet from the sun, the mass of the sun, and the velocity of the comet. The further the comet is from the sun, the longer the period of its orbit. As the comet approaches the sun, its ices start to vaporize and create a bright tail that can be seen from Earth.
In summary, Einstein's theory of general relativity explains that Halley's Comet only appears every 76 years because of the shape of its orbit around the sun, which is determined by the mass of the sun and the distance of the comet from the sun, as well as the velocity of the comet. The orbit is an elliptical one and the distance from the sun causes the vaporization of ices which make the tail visible from Earth.
Which of the following changes would make the water balloon more likely to pop? (Ignore effects of convection within the fluid.)
a) Use a thicker balloon.
b) Use a liquid that has a higher heat capacity than water.
c) Use a liquid that has a lower heat capacity than water.
d) Use a thinner balloon.
The changes that would make the water balloon more likely to pop is: to use a liquid that has a lower heat capacity than water to use a thicker balloon. The correct options are B and C.
What is heat capacity? Heat capacity or also known as thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to an object to produce a unit change in its temperature.
So, Using a liquid that has a lower heat capacity than water and using a thicker balloon will make the water balloon more likely to pop. We know now that heat capacity or specific heat is the amount of heat per unit mass that is required to raise the temperature by 1°C.
This is helpful in determining the processing temperatures along with the amount of heat required for processing and could be helpful for differentiating between two polymeric composites.
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True /False. An independent voltage source always keeps the potential difference between its terminal equal to its nominal voltage
False. An independent voltage source is a two-terminal device that can maintain a fixed potential difference between its terminals, but it does not necessarily keep the potential difference equal to its nominal voltage.
What is nominal voltage?Nominal voltage is an electrical term used to describe the average, or expected, voltage of an electric circuit. It is typically used as a reference point for other measurements. Nominal voltage is typically defined as the voltage that is expected to be available under normal operating conditions, and it is often used to indicate the voltage that is desired for a particular device or system. Nominal voltage is typically specified as a range, with the lower end of the range representing the minimum acceptable voltage and the higher end of the range representing the maximum acceptable voltage.
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Can a charged particle have a net negative charge of 6.4 x 10-19
C? Take the elementary charge (the charge of a single electron) to
be -1.6 x 10 19 C.
No, because the particle has a positive charge.
Yes, because the particle has excess charges.
0/1 pts
No, because the particle has deficiency of charges
(missing electrons)
Yes, because the particle has an integer number of excess
electrons.
By dividing an object's charge by its basic charge, one can calculate the quantity of extra electrons (or protons, in the case of positive charges), in a system.
What material that has an excess of electrons?When there are lots of free electrons in a material, it is said to have high electron mobility, but when there are few or no free electrons, it is said to have low electron mobility. Here are some typical illustrations of conductors and insulators: Conductors.It indicates that metals contain extra electrons in their outermost shell that are free to move about. These extra electrons act as charge carriers and are physically transferred when a current is running.To convert, multiply the net charge, Q, by the factor 1.6 x 10 x 19 to obtain the charge's value in basic charge units. This is also equivalent to how many extra electrons are present on the thing.To learn more about charge refer to:
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1. A 6-kg bowling ball sits on top of a building that is 120 meters tall.
Circle one: KE / GPE / both
Show your work for finding the values of each type of energy the object has:
Mass = GPE=mgh
Gravity (g) = 9.8 m/s2
Height =
2. A 3-kg bowling ball rolls at a speed of 5 m/s on the roof of the building that is 75 m tall.
Circle one: (KE) / GPE / both
Show your work for finding the values of each type of energy the object has:
KE GPE=mgh
Mass = Mass =
Velocity = Gravity (g) = 9.8 m/s2
Velocity2= Height =
KE = ½ (M) (V)2 GPE=mgh
3. A 4-kg bowling ball rolls at a speed of 15 m/s on the ground.
Circle one: (KE) / GPE / both
Show your work for finding the values of each type of energy the object has:
KE KE = ½ (M) (V)2
Mass =
Velocity =
Velocity2=
4. A 15-kg child is tossed up into the air by her parent. The child is 2.5 meters off the ground traveling 3 m/s.
Circle one: KE / GPE / (both)
Show your work for finding the values of each type of energy the object has:
KE GPE
Mass = Mass =
Velocity = Gravity (g) = 9.8 m/s2
Velocity2= Height =
KE = ½ (M) (V)2 GPE=mgh
KE + GPE =
(1) The gravitational potential energy of the bowling ball is 7,056 J.
(2)The potential energy and kinetic energy of the bowling ball are 2,205 J and 37.5 J respectively.
(3) The kinetic energy of the bowling ball is 450 J.
(4) The potential energy and kinetic energy of the child re 367.5 J and 67.5 J respectively.
What is the gravitational potential energy of the bowling ball?The gravitational potential energy of the bowling ball is calculated by applying the following formula;
P.E = mgh
where;
m is the mass of the objecth is the heightg is acceleration due to gravityP.E = ( 6kg x 9.8 m/s² x 120 m )
P.E = 7,056 J
(2) The potential energy and kinetic energy of the bowling ball is calculated as follows;
P.E = (3 x 9.8 x 75 )
P.E = 2,205 J
K.E = ¹/₂ mv²
K.E = ¹/₂ ( 3 ) x (5²)
K.E = 37.5 J
(3) The kinetic energy of the bowling ball is calculated as follows;
K.E = ¹/₂ mv²
K.E = ¹/₂ ( 4 ) x (15²)
K.E = 450 J
(4) The potential energy and kinetic energy of the child is calculated as follows;
P.E = (15 x 9.8 x 2.5 )
P.E = 367.5 J
K.E = ¹/₂ mv²
K.E = ¹/₂ ( 15 ) x (3²)
K.E = 67.5 J
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Type the numerical answer only. No degree symbol or the word 'degree'. *
17. Find the m/B
Your answer
▸
A
75
B
No doorge symbol or the word 'degree'
C
Press Alt and 0176 on your keyboard. Please take note that this technique only functions on keyboard shortcut with a 10-key numeric pad.
What are keyboard shortcut?Using a keyboard shortcut, you can quickly insert the degree sign in Word documents if your keyboard has a number pad.To begin, position the cursor where you want the degree sign to appear on your page.After then, use your keyboard shortcut Alt+0176. Remember that while holding down the Alt key, you must enter the correct digits. To enter numbers instead of using the keys on your keyboard, use the numeric pad.Holding down the ALT key, type 0 1 7 6 on the numeric keypad of the keyboard. With NumLock turned on, enter 0176 with the leading zero. Hold down the NumLock key while starting to type the 0176 numbers if there isn't a numeric keypad.To learn more about keyboard shortcut from the given link
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A block weighing 50 N is lifted from A to C.
a) Find the work done against the gravity (the work done by the external force which lifted the block). Answer in units of J.
b) Find the difference ∆U = UA − UC of the potential energies.
The force F is equal to 50 N and the height h is not given, we cannot calculate the exact value of ∆U.
What is force?Force is an influence that can cause an object to change its motion, direction, shape, or stress state. It is a vector quantity, meaning it has both magnitude and direction.
a) The work done against gravity is equal to the force of gravity multiplied by the distance the block was lifted:
Work = F × d = 50 N × d
Since the distance is not given, we cannot calculate the exact amount of work done.
b) The potential energy of the block at point A is equal to the force of gravity (F) multiplied by the height (h) at which the block was initially located:
UA = F × h
Similarly, the potential energy of the block at point C can be calculated as:
UC = F × 0
Since the block is lifted from A to C, the difference of potential energies is given by:
∆U = UA − UC = F × h − 0 = F × h
Since the force F is equal to 50 N and the height h is not given, we cannot calculate the exact value of ∆U.
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mass of gold is 4.295 g leaf of 3.449 um thickness
(a) The area of the leaf is 0.064 m².
(b) The length of the fiber is 10,359.2 m.
What is the area of the leaf?
The area of the leaf is calculated from the volume of the leaf, while the volume of the leaf is calculated from the density and mass of the leaf.
V = m / ρ
where;
V is the volume of the gold leafm is the mass of the gold leafρ is the density of the gold leafV = ( 4.295 g ) / ( 19.32 g/cm³ )
V = 0.22 cm³ = 0.22 x 10⁻⁶ m³
Ah = V
A = V / h
where;
h is the thickness of the leadA is the area of the leafA = ( 0.22 x 10⁻⁶ m³ ) / ( 3.449 x 10⁻⁶ m )
A = 0.064 m²
The length of the fiber is calculated as follows;
V = πr²h
h = V / πr²
h = ( 0.22 x 10⁻⁶ m³ ) / ( π x 2.6 x 10⁻⁶ m x 2.6 x 10⁻⁶ m )
h = 10,359.2 m
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using the information listed in the description, which type of spring do you choose to most closely reach the targeted launch speed of 12.6 m/s? show your work and explain your answer using what you know of kinetic energy, elastic potential energy, and conservation of energy
A linear spring with a spring constant of 77.2 N/m would be the best choice to most closely reach the targeted launch speed of 12.6 m/s.
To calculate the spring constant needed to reach the target launch speed, and determine the elastic potential energy stored in the spring. This is equal to the spring constant multiplied by the square of the displacement of the spring E = 1/2 kx². We then use this value to calculate the kinetic energy of the object at launch KE = 1/2 mv². Finally, we can use the conservation of energy to solve for the spring constant k = 2(KE)/x².
In this problem, the mass of the object is 1 kg. The target launch speed is 12.6m/s. Putting these values into the equation above, we can calculate the spring constant needed to reach the target launch speed,
k = 2(1/2 (1) (12.6²)) / (1²)
k = 77.2 N/m
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scientists explored how hoverflies detect motion by testing their response to a free-fall condition. hoverflies were dropped from rest in a 40-cm-tall enclosure. air resistance was not significant, and the flies could easily withstand a crash landing. the illumination in the enclosure and the patterning of the walls were adjusted between trials. hoverflies dropped in darkness were generally not able to detect that they were falling in time to avoid crashing into the floor, while hoverflies dropped in a lighted enclosure with striped walls were generally able to avoid this fate. the findings imply that hoverflies rely on a visual rather than a kinesthetic sense to detect the condition of free fall. suppose a hoverfly detects that it is falling 150 ms after being dropped, a typical time, and then starts beating its wings.
The acceleration of hoverflies is 13.879[tex]\frac{m}{s^{2} }[/tex].
It has fallen height from 0.11m
Now, the remaining height is 0.29m.
When an object shifts in relation to time, there are two ways to measure the shift in the object's position. One may take into account the actual distance traveled or the distance that is shortest between the two points.
Here in lies the distinction between two incredibly basic physics ideas. Distance is the first unit of measurement used to determine how an object's location has changed, while displacement is the second.
Distance is the real unit used to describe how much an object's position has changed overall over time. Since it is a scalar quantity, all that is provided is the magnitude.
Now using third equation of motion,
[tex]v^{2}- u^{2}=2as[/tex]
[tex]v^{2}-0=2\times-9\times0.11[/tex]
[tex]v^{2}=-2.2[/tex]
v=1.5
[tex]v^{2}- u^{2}=2as[/tex] as remaining s=0.29 and v of crashing as it goes downwards which negative. 0 and u= 1-5 as its downward now by this find the acceleration.
[tex]v^{2}- u^{2}=2(a-10)s[/tex]
[tex]0^{2}- 1.5^{2}=2(a-10)\times0.29[/tex]
a=13.879[tex]\frac{m}{s^{2} }[/tex]
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The acceleration of a particle is directly proportional to the square of the time t. When t=0, the particle is at x=24m. Knowing that at t=6s, x=96m and v=18m/s, express x and v in terms of t.
Answers are: x(t) = t^4/108 + 10t + 24, v(t) = t^3/27 + 10
Need to see the solution to understand.
The position and velocity of the particle are [tex]x(t) = 2t^2 + 24[/tex] and [tex]v(t) = 4t[/tex]
The problem states that the acceleration of a particle is directly proportional to the square of the time, which means that the equation for acceleration (a) is of the form [tex]a = k*t^2[/tex], where k is a constant.
Given that the position of the particle at t = 0 is x = 24m, we can use this to find the initial velocity (v0) using the equation: [tex]x = x0 + v0t + 1/2a*t^2[/tex].
Since we know that x = 24m at t = 0, we can substitute these values into the equation and get:
[tex]24 = 24 + v00 + 1/2k*0^2[/tex]
This simplifies to v0 = 0.
Now, we can use the information that at t = 6s, x = 96m and v = 18m/s to find the value of k. We know that [tex]x = x0 + v0t + 1/2at^2[/tex] and v = v0 + at.
So we can substitute these values into the equation and get:
[tex]96 = 24 + 0 + 1/2k6^2 = 24 + 1/2k36[/tex]
18 = 0 + k*6
Solving the above two equations, we get k = 4.
So the equation for acceleration is [tex]a = 4*t^2[/tex].
We can use this equation to find the equations for position and velocity by using the following formulas:
[tex]x(t) = x0 + v0t + 1/2at^2[/tex]
[tex]v(t) = v0 + at[/tex]
Substituting the values we know, we get:
[tex]x(t) = 24 + 0 + 1/2*(4t^2) = 2t^2 + 24[/tex]
[tex]v(t) = 0 + 4t = 4t[/tex]
So, the position and velocity of the particle are given by [tex]x(t) = 2t^2 + 24[/tex]and [tex]v(t) = 4t[/tex] respectively.
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water parks often include a log rolling area, in which participants try to stay upright while balancing on top of floating logs that are free to rotate in the water. if you've tried this, you know that the larger the diameter of the log, the easier it is to balance on top. (figure 1)
Buoyancy Force is the reason for the larger the diameter as the Larger the diameter larger the volume of log rolling and the higher the Buoyancy force which leads to floating the participants.
The floating of any dogy depends upon the Buoyancy force that the body is having or we can say the force which is applied on the water's surface to float on it. And However, Buoyancy depends on three things.
1. Gravitational pull(g)- the force applied by the planet to pull/attract ant mass towards itself. in the case of the earth, it is fixed which is 9.8 ms^-2.
2. The density(p)- It is the mass per volume of any liquid In the case of distilled water it is 997 kg/m³. It may barry for ocean water.
3. Volumn of the body(v)- It is the volume of the body which is floating on water.
So fb = g*p*v where fb( Buoyancy force) is directly proportional to the volume of the body.
So the Greater the volume of the body higher it will float.
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A piano tuner stretches a steel piano wire with a tension of 765 N. The steel wire has a length of 0.900mand a mass of 6.75g .
Part A
What is the frequency f1 of the string's fundamental mode of vibration?
Express your answer numerically in hertz using three significant figures.
The fundamental frequency of the String is 177.42 Hz.
We define the frequency of a sinusoidal wave as the number of complete oscillations made by any wave element per unit of time. Thus, frequency is a parameter that describes the rate of oscillation and vibration.The time period of oscillation of a wave is defined as the time taken by any string element to complete an oscillation.The angular frequency refers to the angular displacement of any wave element per unit of time or the rate of change of the waveform phase.Given,
The Tension (T) in the String is 765 N.
Steel wire length (L) is 0.900 m
Mass of the string (m) is 6.75 g = 6.75 * 10^-3 kg.
Frequency of the string = n *(Velocity of the wave on the String/(2L) )
Velocity of the wave on the string is : V = [tex]\sqrt{\frac{T}{m/L} }[/tex]
Putting these values in above equation we get : V = 319.37 m/s
For Fundamental Frequency n = 1
Frequency = V / 2L
f = 319.37 / (2*0.9)
f = 177.42 Hz
So, the fundamental frequency of the String is 177.42 Hz.\
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