The amount of metabolic energy expended by the bird is 39.2 J.
What do you mean by energy?Energy is the ability to perform work in physics. It might exist in several different forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred from one body to another. Energy is always assigned based on its type once it has been transmitted. Thus, heat transmitted may appear as thermal energy while labor performed may result in mechanical energy. Motion is a property of all energy types. For instance, if a body is moving, it possesses kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is due of its design, which includes potential energy.
E = mgh = (0.20)*(9.8)*(20) = 39.2 J
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A car, travelling at 25 m/s, starts to accelerate uniformly at 3 m/s2 for 80 m.
A car, travelling at 25 m/s, starts to accelerate uniformly at [tex]3m/s^2[/tex]for 80 m.
The final velocity will be:
[tex]\sqrt{1105} m/s[/tex]
How to find the final velocity?
We will use Newton's third law.
[tex]v^2-u^2=2as[/tex]
where,
v = final velocity
u = initial velocity
a = acceleration
s = distance
Substituting the values, we get:
[tex]v^2=480+625=1105\\v=\sqrt{1105}[/tex]
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Is the magnetic field inside the loop increasing in strength, decreasing in strength, or steady?
There is a induced current in the conducting loop shown in the figure. According to the Lenz law, the magnetic field inside the loop is decreasing in strength.
State Lenz law.
The induced electromotive force (emf) with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in to ensure that the original flux is maintained throughout the loop when the current flows in it.
How is Lenz’s law conservation of energy?
Lenz’s law is based on the law of conservation of energy. The induced current is always opposed by the cause that produces it. Hence, there is extra work done against the opposing force. The work done against the opposing force results in the change in the magnetic flux and hence the current is induced. Hence the law of conservation of energy is satisfied.
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Sodium is a metal and chlorine is a gas. Is sodium chloride (table salt) is there a gas or a metal like the elements it's made of?
A. Yes
B. No, it has completely different properties
Answer:
B. No, it has completely different properties
Explanation:
Sodium Chloride itself is not an element, but an ionic compound composed of two different elements.
A 5. 00 l sample of a gas exerts a pressure of 1040 torr at 50. 0°c. In what volume would the same sample exert a pressure of 1. 00 atm at 50. 0°c? report your answer in liters to two decimal places.
By ideal gas approximation, the final volume is 6.84 liters.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
V1 = 5 L
P1 = 1040 torr = 1040 / 760 atm
P2 = 1 atm
When the initial and final temperature is the same, we can use the ratio of pressure and volume as
P1 . V1 = P2 . V2
(1040 / 760) . 5 = 1 . V2
V2 = 6.84 liters
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A block of wood weighs 65.84 g and has a density of 0.673 g/cm3. what is the volume of the wood?
The block of wood is 65.84g so, the volume of the wood is 97.83 cm3.
Given:
Weighs =65.84 g
Density= 0.673 g/cm3
=65.84/0.673
=97.83 cm3
What do you mean volume?The amount of space or volume that a three-dimensional object occupies. Volumes are measured in cubic units. an evaluation of how loud or powerful a sound is.
It is more common to think of a container's volume as its capacity rather than as the quantity of room it occupies. In other words, a container's volume is determined by how much liquid or gas it can hold.
To measure volume, first standardized containers are employed, and subsequently naturally occurring containers with a similar shape. A number of simple three-dimensional shapes can have their volume easily calculated using arithmetic methods.
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Newton’s second law relates an object’s acceleration to its mass and the net force acting on it. Does newton’s second law apply to a situation in which there is no net force? select the best explanation.
Newton's second law does apply to a situation in which there is no net force as having a net force of zero will produce an acceleration having 0.
According to Newton's second law, the acceleration of an object depends upon two variables- the mass of the object and the net force acting on the object. Here, the acceleration of an object is directly proportional to the force acting on it and inversely proportional to the mass of that object. The net force applied is equal to the sum of all the forces acting on an object.
In a situation where the net force applied is zero, the object having a mass would have zero acceleration. This means that the object would have zero velocity and would be constant.
This depicts that Newton's second law can be applied to every situation where there is a net force applied, or not. Even if there is no net force, this law can still be applied.
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The average distance between a planet and the sun is given by the ________ of its elliptical orbit.
The average distance between a planet and the sun is given by the Semimajor axis of its elliptical orbit.
All the planets present in our Solar System travel around the Sun in an elliptical orbits. Semimajor axis of its elliptical orbit is the longest semidiameter or one half of the major axis of the elliptical orbit.
The distance between the Sun and the planets can be easily calculated using the Equation of Motion. The average distance between Earth and the Sun, which is about 150 million kilometers. The average distance between a planet and the sun is given by the Semimajor axis of its elliptical orbit.
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High temperature and pressure tend to favor flow rather than breakage, so it is surprising that large, very deep earthquakes are sometimes observed, occurring in warm places where the pressure is high. What is accurate about these rare, deep earthquakes?.
They happen at subduction zones, where shifting mineral assemblages appear to "implode" as a result of increased pressure on the rock as it is subducted deeper.
The notion that is currently preferred is "Implosion." The building blocks often reorganize to take up less space as subduction zones move rocks deeper where pressure is stronger, moving from, say, a one-on-top-of-another pattern to a fit-in-the-gap-between-those-below pattern. This might sometimes seem to happen gradually before happening abruptly (I can't move till my neighbor does...), resulting in an implosion. Where temperatures and pressures are just so high that we don't imagine rocks can break, the largest, deepest earthquakes occur. Nowhere near as deep as the earthquakes, humans have never dug a hole. Atomic bomb testing has mostly ended. A large earthquake is also much larger than a large atomic weapon.)
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a ball is dropped from an upper floor, some unknown distance above your apartment. as you look out of your window, which is 1.50 m tall, you observe that it takes the ball 0.240 s to traverse the length of the window.
Height above the top of Tom's window the ball was dropped= 1.31m
Given that,
The height of window (s) = 1.50m
Time(t) = 0.240s
We have to find the height, and for this, we have to find the velocity using the equation of motion:
s = ut + 1/2 g[tex]t^{2}[/tex]
By putting the value of h and t in the equation
1.50 = u × 0.240 + 1/2 × 9.8 × [tex]0.240^{2}[/tex]
1.50 = u × 0.240 + 0.28224
u = (1.50 - 0.28224) / 0.240
u= 1.21776 / 0.240
u= 5.074
Now we have to calculate height by using the formula
[tex]v^{2}[/tex] = [tex]u^{2}[/tex] + 2gh
By putting the value of u and v we get
[tex]5.074^{2}[/tex] = 0 + 2 × 9.8 × h
h = [tex](5.074)^{2}[/tex]/ 2 × 9.8
h = 1.31 m
Therefore the height is 1.31 m above the window.
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The complete question is:
A ball is dropped from an upper floor, some unknown distance above Tom's apartment. As he looks out of his window, which is 1..50 m tall, Tom observes that it takes the ball 0.240 s to traverse the length of the window. Determine how high ℎ above the top of Tom's window the ball was dropped. Ignore the effects of air resistance.
A metal bowl with a weight of 1.05 n is placed in a larger kitchen container filled with soybean oil. how much soybean oil must the bowl displace in order to float? for reference, the mass density of soybean oil is about 917 g/liter and its weight density is about 8,99 n/liter. please give your answer in liters
The volume of soybean oil displaced by the boat to float is 0.00011 liters or 1.1 x 10^-4 liters.
An object floating in a liquid follows Archimedes’ Principle.
According to the Archimedes Principle, the amount of fluid displaced by the body is equal to its weight.
So, the buoyant force applied by the liquid should be equal to the weight of the bowl.
Hence
Weight of bowl = Buoyant Force of Soybean Oil
Mg = V(ρ)(g)
Here V = volume of soybean oil
ρ = density of soybean oil
1.05 = V x 917 x 9.8
The volume(V) comes out to be 0.00011 liters.
Thus, the volume of soybean oil displaced by the bowl to float is 0.00011 liters or 1.1 x 10^-4 liters.
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Scientists are trying to create plasma in
An ionized plasma can be created in cyclotron with the help of superimposition of static magnetic field and electromagnetic field.
What is Plasma?Plasma is superheated matter. It is so hot that the electrons are ripped away from the atoms forming an ionized gas. It comprises over 99% of the visible universe.
Given in the question is about Plasma, which is also fourth state of matter.
Scientists are trying to create Plasma in cyclotrons. Cyclotron is a device that propels a beam of charged particles in a circular path. It is also called particle accelerator. Electron cyclotron resonance (ECR) occurs when the natural frequency of the rotating electrons coincides with the frequency of incident radiation. One method to produce ionized plasma is to superimpose a static magnetic field with the high frequency Electromagnetic field at the electron cyclotron resonance frequency.
Therefore, an ionized plasma can be created in cyclotron with the help of superimposition of static magnetic field and electromagnetic field.
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the particle travels with a constant speed of 300 mm>s along the curve. determine the particle’s acceleration when it is located at point (200 mm, 100 mm) and sketch this vector on the curve.
The correct answer 322mm/s^2.
The growing x-axis, symbolised by i shows the direction of the velocity. Since integration and differentiation can be used to solve problems of this nature, it is recommended for students to study and comprehend their fundamental processes.
v=300mm/s
a_t=dv/dt=0
y=20(10^3)/x ____(1)
For x=200
dy/dx|x=200 = - 20(10^3)/(200)^2
dy/dx|x=200=-0.5
Now differentiating equation (1) with respect to x again
d^2y/dx^2|(x=200)=40(10^3)/(200)^3
d^2y/dx^2|(x=200)=5(10^-3)
Write the expression of ρ.
ρ=(1+(dy/dx)^2)^3/2/|d^2y/dx^2|
substitute the values,
ρ=(1+(0.5)^2)^3/2/5(10^-3)
ρ=279.5mm
Write the expression of the radial acceleration.
a_n=v^2/ρ
a_n=(300mm/s)^/279.5mm
a_n=322mm/s^2
Understand that the tangential acceleration is zero. Thus, write the expression of the net acceleration.
a=√a_t^2+a_n^2
a=√((0mmm/s^2)^2+(322mm/s^2)^2
a=322mm/s^2
Understand that the given information,
dy/dx=-0.5
tanθ=-0.5
θ=26.6(anticlockwise)
Draw the calculated vector on the curve.
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Freeways in Australia have a maximum speed of 100kph (27.78m/s)
An average speed camera measured the time over the course of 5km and found that it took me exactly 2 minutes and 52 seconds to travel that distance…
What was my average speed?
Answer to the nearest whole number in meters per second.
Since it takes exactly 2 minutes and 52 seconds to travel that distance ,your average speed is 29.07 m/s
What is average speed?Average speed is the total distance travelled/time taken for the distance.
What is your average speed?Given that Freeways in Australia have a maximum speed of 100kph (27.78m/s) and an average speed camera measured the time over the course of 5km and found that it took me exactly 2 minutes and 52 seconds to travel that distance,
the total distance travelled is 5 km = 5000 m and the total time = 2 min 52 s = 2 × 60 s + 52 s = 120 s + 52 s = 172 sSince the average speed = total distance/total time, substituting the values of the variables into the equationm we have
average speed = total distance/total time
average speed = 5000 m/172 s
= 29.07 m/s
So, your average speed is 29.07 m/s
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calculate the deceleration of a snowboarder going up 5° slope assuming to go fission affection for waxed wet on wet snow
The deceleration of a snowboarder going up is 1.8 m / s²
We know that,
F = m * a
[tex]f_{k}[/tex] = μ[tex]_{k}[/tex] * [tex]F_{N}[/tex]
F = Force
m = Mass
a = Acceleration
[tex]f_{k}[/tex] = Kinetic frictional force
μ[tex]_{k}[/tex] = Co-efficient of kinetic friction
[tex]F_{N}[/tex] = Normal force
θ = 5°
μ[tex]_{k}[/tex] = 0.1
Since the snowboarder is going up the hill at an angle of 5°, the weight of the snowboarder does not align with the traditional y-axis direction. So resolving the weight into horizontal and vertical components.
sin 5° = - [tex]W_{x}[/tex] / W
[tex]W_{x}[/tex] = - W sin 5°
cos 5° = - [tex]W_{y}[/tex] / W
[tex]W_{y}[/tex] = - W cos 5°
[tex]f_{k}[/tex] = 0.1 ( [tex]W_{y}[/tex] )
[tex]f_{k}[/tex] = - 0.1 ( W cos 5° )
Σ [tex]F_{x}[/tex] = m [tex]a_{x}[/tex]
[tex]W_{x}[/tex] + [tex]f_{k}[/tex] = m [tex]a_{x}[/tex]
- W sin 5° - 0.1 ( W cos 5° ) = m [tex]a_{x}[/tex]
- W ( sin 5° + 0.1 cos 5° ) = m [tex]a_{x}[/tex]
- m g ( sin 5° + 0.1 cos 5° ) = m [tex]a_{x}[/tex]
- 9.8 ( sin 5° + 0.1 cos 5° ) = [tex]a_{x}[/tex]
[tex]a_{x}[/tex] = - 1.8 m / s²
Deceleration is the negative acceleration. When an object slows down it has deceleration. Kinetic friction is the frictional force created due to an object's motion.
Therefore, the deceleration of a snowboarder going up is 1.8 m / s²
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The average atomic mass of 6li and 7li are 6.0151 amu and 7.0160 amu, respectively. calculate the natural abundances of 6li. the average atomic mass of li is 6.941 amu.
Average atomic mass = f1M1 + f2M2 +… + fnMn
where f is the fraction representing the natural abundance of the isotope and M is the mass number (weight) of the isotope.
let x be the fraction of ^6li ,
then fraction abundance of [tex]^7li[/tex] will be (1-x)
now applying above equation:
6.941 = x × 6.0151 +(1-x) 7.0160
1.0009x = 0.075
x = 0.0749
so % of [tex]^6li[/tex]= 7.49%
% of [tex]^7li[/tex]= 92.50%
Average Atomic Mass is the average mass of an element based on the percent abundance of each isotope of that element. (atoms with different number of neutrons, but same number of protons).To know more about Average Atomic Mass visit : https://brainly.com/question/13753702
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Modifying games is one way to level the playing field for individuals of varying abilities provide four examples of how you could modify the game of baseball
It has been demonstrated that modified sports, in which the equipment and rules are altered to improve skill performance, foster skill learning and may even boost participation.
The sport is replicated in a modified game, although some of the regulations are altered. Limited touches or time with the ball, a smaller field or court, different-sized balls or goals, or the obligation to defend repeatedly are some examples of modified rules. Like any other sport you may have played, such as basketball or football, modified sports feature regulations that have been modified to take into account the talents and abilities of older or less mobile participants. Depending on the skills of the participants who want to participate, modified sports can be altered.
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What phrase describes radioactivite decay
the splitting of a large nucleus into smaller nuclei is the phrase that describes radioactive decay
The process through which an unstable atomic nucleus loses energy through radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A substance with unstable nuclei is regarded as radioactive decay
The complete question is
Which phrase describes radioactive decay? (1 point)
the triggering of one reaction by the products of another
the joining of small nuclei into a laroid nucleus
o the splitting of a large nucleus into smaller nuclei
o the spontaneous emission of radiation
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chanice drives her scooter 7 kilometres north. she stops for lunch and then drives 5 kilometres east. what distance did she cover? what was her displacement?/8
By using vector
a. the distance traveled is 12 kilometres
b. the resultant displacement is (7 i + 5 j) kilometres
We need to know about vectors to solve this problem. Vector has magnitude and also direction. Displacement is included in vector. It can be written as
s = sx i + sy j + sz k
where s is displacement, sx is displacement on x-axis, sy is displacement on y-axis and sz us displacement on z-axis.
From the question above, we know that
east = positive x
south = negative y
west = negative x
north = positive y
s1 = 7 j
s2 = 5 j
The distance traveled is
s = s1 + s2
s = 7 + 5
s = 12 kilometres
The resultant displacement is
s = s1 + s2
s = 7 i + 5 j
s = (7 i + 5 j) kilometres
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Can any word in this language be interpreted as a string of elements from s in two different ways?
No, the words can be interpreted in one way only:
* If the word is consisting of only a's, it can be factored in one way as groups of (aa).
* If there is a single b (or the first b), then
if there is an even number of a's (including 0) before the b, this b is denoted as the start of (baa) and the a's before it is factored in one way as groups of (aa).
if there is an odd number of a's before the b, this b is a part of (aba) and the a's before it is factored in one way as groups of (aa).
* If there is a second b, then if the first b was denoted as a part of (baa), then if there is an even calculated numbers of a's between the b's, then
the second b is part of (baa), and the a's in between are factored in just one way as groups of (aa).
if there is an odd number present that is a's between the b's, then
this second b is denoted as a part of aba, and the a's in between are factored to be in one way as groups of (aa).
if the first b was part of (aba), then
if there is taken to be an even number of a's between the b's, then
the second b is part of (aba), and the a's in between are factored in one way as groups of (aa).
if there is an odd number of a's between the b's, then
the second b is a part of (baa), and then the a's in between are factored in a one way denoted as groups of (aa).
The same argument can be used for words containing more than 2 b's.
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a rigid tank contains an ideal gas at 40°c that is being stirred by a paddle wheel. the paddle wheel does 200 kj of work on the ideal gas. it is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between th
The total entropy generation is 0.67 kJ/K
CalculationSince there is no increase in the temperature of the gas, so according to the 1st law of thermodynamics
δQ=dU+δW
⇒ δQ=δW=200KJ
Then here dU is zero because the temperature is constant.
Now, S2−S1=∫[tex]\frac{δQ}{T}[/tex]+ Sgen
Here as it can be seen, there is no increase in the temperature of the gas. So, here we apply the first law of thermodynamics.
∴ S2−S1=0
⇒ Sgen= [tex]-\frac{(-200)}{(27+273)}[/tex] = [tex]\frac{200}{300}[/tex] = 0.67kJ/K
What is the first law of thermodynamics?The first law of thermodynamics expresses that the entire energy of the universe remains the same. Even though the energy can be exchanged between the system and its surroundings, it can never be created not destroyed.
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Which of the following elements is likely to form an ionic bond with potassium?
Chlorine is likely to form an ionic bond with potassium.
A chemical bond is a strong bond that can be formed between atoms, ions, or molecules to generate chemical compounds. The bond may be created by the sharing of electrons in covalent bonds or by the electrostatic attraction of two oppositely charged ions, as in ionic bonds.
The main interaction in ionic compounds is ionic bonding, a type of chemical bonding that involves the electrostatic attraction between two atoms or ions with dramatically differing electronegativities.
When a metal and a non-metal react, an ionic bond is created.
To establish an ionic bond, the metal loses electrons (donates them), whereas non-metals receive electrons (accept them).
Chlorine (Cl) is a non-metal, whereas potassium is a metal. As they interact to create an ionic bond, potassium donates one electron while chlorine accepts one.
The correct option is (A).
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a spring-loaded gun can fire a projectile to a height h if it is fired straight up. if the same gun is pointed at an angle of 45° from the vertical, what maximum height can now be reached by the projectile?
Answer
1/2 m v^2 = m g H by conservation of energy for an object fired straight up or
H = v^2 / (2 * g)
For an object traveling at 45 deg then
Vy = V sin 45 = 2^1/2 / 2 * V
So now
H = 1/2 * v^2 / (2 * g) = v^2 / (4 * g)
and the projectile will travel H / 2 instead of H
If the dark adapted eye has a pupil diameter of 7.0 mmmm , how many photons per second enter the eye from the star? assume the starlight has a wavelength of 550 nmnm .
1562.2 photons per second enter the dark adapted eye has a pupil from the star.
What is wavelength?A waveform signal's wavelength, which is the distance between two identical locations (adjacent crests) in the succeeding cycles, determines whether it is sent over space or via a wire. In wireless systems, this length is frequently specified in metres (m), centimetres (cm), or millimetres (mm) .
energy of each photon
E = hc/ lamda
E = 3.61 * 10 to power -19J
N, the number of photons that enter each second
NE = P
N = P/E
N = 1562.2 photons/sec
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a 1550 kg car located at 275, 0, 0 m has a momentum of 46000, 0, 0 kg · m/s. what is its location 11 s later? (express your answer in vector form.) rf
The location of the car after 11 seconds will be 445.05 m.
Mass of the car = 1550 kg
The momentum of the car = 46000
Distance of the car = 275 m
The velocity of the car is,
Momentum = Mass × Velocity
M = m × v
[tex]v = \frac{M }{m}[/tex]
[tex] = \frac{46000}{1550} [/tex]
= 29.67 m/s
The velocity of the car is 29.67 m/s.
The location of the car after 11 seconds will be,
[tex]Velocity = \frac{ Distance}{ Time}[/tex]
[tex]v = \frac{d}{t} [/tex]
d = v × t
= 29.67 × 15
= 445.05 m
Therefore, the location of the car after 11 seconds will be 445.05 m.
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3. If the current is 6 A and the voltage is 420 V, calculate the resistance
If the current is 6A and the voltage is 420 V, the resistance is 70ohms.
How to calculate resistance?Resistance is the opposition offered by an electrical conductor to the flow of a current through itself, resulting in a conversion of electrical energy into heat and radiation.
The resistance of a current can be calculated using the following formula;
V = IR
Where;
V = voltage R = resistanceI = currentAccording to this question, a current of 6 A and the voltage of 420V is given. The resistance is as follows:
420 = 6 × R
R = 420/6
R = 70 ohms
Therefore, If the current is 6A and the voltage is 420 V, the resistance is 70ohms.
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an electric range has a constant current of 10a entering the positive voltage terminal with a voltage of 110v. the range is operated for two hours, find the charfe
According to the current, the charge is 72,000 coulombs.
We need to know about current to solve this problem. Current can be defined as the flowrate of charge through the medium. It can be determined as
I = Q / t
where I is current, Q is charge and t is time.
From the question above, we know that
I = 10 A
h = 2 hours = 2 x 3600 second = 7200 second
By substituting the given parameters, we can calculate the charge
I = Q / t
10 = Q / 7200
Q = 72,000 coulombs
Hence, the charge is 72,000 coulombs.
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which of the following astronomers introduced the most widely accepted hypothesis regarding the origin of the solar system?
Astronomer who introduced the most widely accepted hypothesis regarding the origin of the solar system was Immanuel Kant in 1755.
What is solar system?The Solar System is gravitationally bound system of the Sun and objects that orbit it. It formed 4.6 billion years ago from gravitational collapse of a giant interstellar molecular cloud. The vast majority (99.86%) of system's mass is in the Sun, with most of the remaining mass contained in the planet Jupiter. Four inner system planets—Mercury, Venus, Earth and Mars—are terrestrial planets, being composed primarily of rock and metal. Four giant planets of the outer system are substantially larger and more massive than the terrestrials.
The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; next two, Uranus and Neptune, are ice giants, being composed mostly of volatile substances with the relatively high melting points compared with hydrogen and helium, such as water, ammonia, and methane. All eight planets have nearly circular orbits that lie near the plane of the Earth's orbit, called the ecliptic.
There are an unknown number of smaller dwarf planets and the innumerable small Solar System bodies orbiting the Sun. Six of the major planets, six largest possible dwarf planets, and many of the smaller bodies are orbited by natural satellites, commonly called "moons" after Earth's Moon.
Two natural satellites, Jupiter's moon Ganymede and Saturn's moon Titan, are larger but not more massive than Mercury, smallest terrestrial planet, and Jupiter's moon Callisto is nearly as large. Each of the giant planets and some smaller bodies are encircled by the planetary rings of ice, dust and moonlets. The asteroid belt, which lies between orbits of Mars and Jupiter, contains objects composed of rock, metal and ice. Beyond Neptune's orbit lie Kuiper belt and scattered disc, which are populations of objects composed mostly of ice and rock.
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What do i observe if i take my largest plastic shopping bag square between the light source and the wall
The take my largest plastic shopping bag square between the light source and the wall
The shadow is typically smaller.absolutely no shadowThe shadow is either clear or hardly there.Rays of light can travel through the cardboard when I hold my largest cardboard square between the light source and the wall, but because the cardboard is not very thick, the light can still pass through and create a shadow.
Do cardboard sheets block light?
Based on the precise materials and light sources that were employed, the results of the cardboard experiment frequently differ.
Keep in mind that it is generally expected that reflective materials, such aluminium foil and mirrors, would reflect the specified or given light.
Since the cardboard is not very thick, light rays do penetrate when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow when held in this position.
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15. The speed of light is very close to 300,000 km/s. The planet Jupiter is around
741 million km from the Sun. How long does it take for light from the Sun to reach
Jupiter?
Answer:it take light sun jupitor bang ding ow 3 seconds beofre bang bing boom
Explanation:
describe one tool or instrument, other than a thermometer, that works using the principle of thermal expansion.
The instrument, other than a thermometer, that works using the principle of thermal expansion is thermostat.
Thermostat is made up of two metals with differing expansion coefficients, Inver and Brass.
We employ it in an electrical device, it is straight at room temperature, if there is a short-circuit or any other issue and the circuit temperature suddenly rises, the thermostat's temperature will rise as well.
Thermal expansion, which typically excludes phase transitions, is the tendency of matter to change its area, volume, shape and density in response to a change in temperature. The material's coefficient of linear thermal expansion typically fluctuates with temperature and is calculated as the relative expansion divided by the change in temperature.
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