Answer:
You need the attachment, sorry I can't answer :(
Answer:
It is short thats what the awnser is
Please help I will give brainliest to the first correct answer
Which factor leads to interference between waves? (2 points)
Select one:
a. A varying phase relationship between waves
b. Similar wave amplitudes
c. Unequal wavelengths
d. Radiation through different regions
Due to the sheer short wavelength, the angle at which constructive interference in between waves occurs is unequal wavelengths.
Unequal wavelengths:Two conditions must be met to create a steady and clear interference pattern: both wave sources must be cohesive, meaning they must emit identical waves with a consistent phase difference. The waves should be monochromatic, meaning that they will have only one wavelength.As a result, the interference between waves would be limited by unequal wavelengths.Find out more about the Unequal wavelengths here:
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You are in a plane, and hit a bird as your flying, how can this impact produce a large impulse, despite the plane being much bigger
It effects the balance of the plane, and slows it. Also you are likely moving faster than the bird, and it would be almost as if you are hitting a brick. However when it makes the plane impulse then it means the sudden loss of speed (even if it is a small bird) that is keeping the plane in the air causes the planes engines to struggle for a short amount of time, while it tries to recover the little amount of speed it has lost (the engines HAVE to regain full speed or the plane will turn to the ground, maybe not ALL the way but it still will lower the nose.
Hope this helps,
Miri
Electric power is to be generated by installing a hydraulic turbine-generator at a site 70 m below the free surface of a large water reservoir that can supply water at a rate of 1500 kg/s steadily. If the mechanical power output of the turbine is 800 kW and the electric power generation is 750 kW, determine the turbine efficiency and the combined turbine–generator efficiency of this plant. Neglect losses in the pipes.
Answer:
[tex]\eta_{turbine} = 0.777 = 77.7\%[/tex]
[tex]\eta_{combined} = 0.728 = 72.8\%[/tex]
Explanation:
First we calculate the power input to the turbine. The input power will be equal to the potential energy of water per unit time:
Input Power = [tex]P_{in} = \frac{Work}{Time} = \frac{Potential\ Energy\ of\ Water}{t} \\P_{in} = \frac{(mass)(g)(height)}{Time} = (mass flow rate)(g)(height)\\\\P_{in} = (1500\ kg/s)(9.81\ m/s^2)(70\ m)\\P_{in} = 1.03\ x\ 10^6\ W = 1030\ KW[/tex]
Now, for turbine efficiency:
[tex]\eta_{turbine} = \frac{Mechanical\ Power\ Out}{P_{in}}\\\\\eta_{turbine} = \frac{800\ KW}{1030\ KW}\\\\\eta_{turbine} = 0.777 = 77.7\%[/tex]
for generator efficiency:
[tex]\eta_{generator} = \frac{Power\ Generation}{Mechanical\ Power\ Out}\\\\ \eta_{generator} = \frac{750\ KW}{800\ KW}\\\\\eta_{turbine} = 0.9375 = 93.75\%[/tex]
Now, for combined efficiency:
[tex]\eta_{combined} = \eta_{turbine}\ \eta_{generator}\\\\\eta_{combined} = (0.777)(0.937)\\\eta_{combined} = 0.728 = 72.8\%[/tex]
An 80-kg student collides with a padded wall in the gymnasium while moving at 6.0 m/s.
Because he collided with a padded wall instead of a concrete wall, the time of collision was
increased by a factor of 10. What affect does this increase in collision time have upon the
force and the impulse that he experiences? Select two answers.
1. Colliding with the padded wall will make the force 10 times greater.
2. Colliding with the padded wall will make the force 10 times smaller.
Answer:
2. Colliding with the padded wall will make the force 10 times smaller
Explanation:
Impulse is the product of force and time. Its units are those of momentum. Assuming the change in momentum (impulse) remains the same, the increase in time means the force will be decreased by the same factor.
Colliding with the padded wall will make the force 10 times smaller
Which of the following are binary ionic compounds?
Answer: MgCl2
Explanation:
HI PLEASE HELP ASAP. THANK YOU
Answer:
3763.2 Joules
Explanation:
GPE = mgh
m = 120kg
g = 9.8
h = 3.2 m
GPE = (120)(9.8)(3.2)
GPE = 3763.2 Joules
If nitrogen and hydrogen combine in a synthesis reaction, what would the product of the reaction be?
N2 + 3H2 →
3
Answer:
2NH
Explanation:
did it on edg 2020
Answer:
2NH
Explanation:
It explains on edg.
what is a nuclear energy?
Answer:
Nuclear Energy is the energy released during nuclear fission or fusion, especially when used to generate electricity.
Hope this helped! Give me Brainiest
What does a represent??
I need it quick
Answer:
a is acceleration
Explanation:
A car travelling along a highway must uniformly reduce its velocity to 15 m/s in 3.5 s. The displacement during that time is 70m. What is the car's initial velocity? m/s (answer in 2 sig figs) What is the car's average acceleration? m/s2 (answer in 2 sig figs)
Answer:
a) What is the car’s average acceleration?
5.33 m/s^2 [Backward]
b) What is its initial velocity?
27.99 m/s [Foreward]
A gorilla weighs 8.00x10^2N and swings from vine to vine. As the gorilla grads a new vine, both vines make an angle of 30 degrees with the verticle. In such a condition of static equillibrium what is the net force on the vine?
Answer:
461.88 N
Explanation:
Let tension in each vine be T .
The vertical component of this tension of both the vine will add up and balance the weight .
2T cos 30 = mg
2 T x cos 30 = 800
T = 800 / (2 x cos30 )
= 461.88 N
Answer:
hi
Explanation:
What would happen if i build a bomb and destroy Pluto
Answer:
a what
well it wouldn't matter because it's not counted a planet anyway
Explanation:
A baseball with a mass of 0.165 kg travels toward the outfield at a speed of 47 m/s. The outfielder’s glove brings the ball to rest in 0.20 s. What is the average force exerted on the ball by the glove?
Answer:
38.775N
Explanation:
A=(f-i)/t, where a=acceleration, f=final velocity, i=initial velocity, and t=time
A=(0-47)/0.2
A=-47/0.2
A=-235m/s^2
Use that acceleration and plug it into this equation
F=ma
F=0.165*-235
F=-38.775N
The glove exerts an equal and opposite force on the ball of 38.775N of force.
A student named Bob is on a bike and the mass is 50 kg. The force causes the student to accelerate at 3 m/s to the power of 2. Calculate the net force that causes this acceleration.???
Answer:
150 N
Explanation:
Force is equal to mass times acceleration. 50 kg accelerating at a mass of 3m/3² is undergoing a force of 150 m/s², or 150 Newtons
1. Spring force is proportional to stretch distance, F=kd. Do you expect doubling the stretch distance double the force?
Yes
No
Answer:
Yes
Explanation:
The spring force is given as:
F = kd
F is the spring force
K is the spring constant
d is the magnitude of the stretch
Since k is a constant, therefore, doubling the stretch distance will double the force.
Both stretch distance and force applied can be said to be directly proportional to one another.
Answer:
Yes!
Explanation:
A car and a delivery truck both start from rest and travel at the same rate, 5 m/sec. The truck travels for 5 seconds, while the car travels for 10 seconds. What is the traveled distance of the car compared to the truck? * a. Half as much b. The same c. Twice as much d. Four times as much
Answer:
c. Twice as much
Explanation:
The distance covered by the truck and the truck can be found by the following equation:
[tex]s = vt[/tex]
where,
s = distance covered
v = speed
t = time
FOR CAR:
[tex]s_{car} = (5\ m/s)(10 s)\\s_{car} = 50\ m[/tex]
FOR TRUCK:
[tex]s_{truck} = (5\ m/s)(5 s)\\s_{struck} = 25\ m[/tex]
Therefore,
[tex]\frac{s_{car}}{s_{truck}} = \frac{50\ m}{25\ m} \\s_{car} = 2s_{truck}[/tex]
The distance covered by the car is twice as much as the distance covered by the truck. So, he correct answer is:
c. Twice as much
Gabriella is moving toward her at 8m/s
Gabriella is moving away from her at 4 m/s
Gabriella is moving toward her at 4 m/s
Gabriella is not moving
An electric current consists of moving
A) atoms
B) electrons
C) elements
D) molecules
A) atoms
B) electronsC) elements
D) molecules
the weight of a person is 400N. he exerts 400N/m² pressure if he stands with both feet. Find the area of the floor covered by his both feet.
Answer:
1 m²Explanation:
The area of the floor covered by his both feet can be found by using the formula
[tex]a = \frac{f}{p} \\ [/tex]
f is the force
p is the pressure
From the question we have
[tex]a = \frac{400}{400} = 1 \\ [/tex]
We have the final answer as
1 m²Hope this helps you
In baseball/softball how many players play in the field at one time?
Answer:
10 players
Explanation:
Question 14 of 25
If magnetic field lines are drawn to represent a magnetic field, what would
they look like?
A. Only some of the lines form loops.
B. There is no consistent pattern in the lines.
C. The lines extend from the north pole to the south pole of the
magnet.
D. The lines extend from the south pole to the north pole of the
magnet.
Answer:
c
Explanation:
magnetic lines moves from North to South Pole of a magnet
The magnetic field lines are drawn to represent the start from the north pole to the south pole of the magnet. Therefore, option (C) is correct.
What are magnetic field lines?The magnetic field can be described as a field generated by the magnet or electric charges in motion. The magnetic field can be defined as the region around a magnetic material within which the force of magnetism acts.
Magnetic fields can be represented using magnetic field lines. Magnetic field lines can be drawn with the help of a compass needle. The tangent can be drawn to the magnetic field lines giving the direction of the magnetic field.
Magnetic field lines appeared to emerge from the north pole and merge at the south pole. The direction of the magnetic field lines is from the south pole to the north pole inside the magnet.
Magnetic field lines never intersect and form a closed loop. Field lines have both magnitude and direction so they are represented by a vector.
Learn more about Magnetic field lines, here:
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the stolen valor act
Answer:
The Stolen Valor Act of 2005, signed into law by President George W. Bush on December 20, 2006, was a U.S. law that broadened the provisions of previous U.S. law addressing the unauthorized wear, manufacture, or sale of any military decorations and medals. The law made it a federal misdemeanor to falsely represent oneself as having received any U.S. military decoration or medal. If convicted, defendants might have been imprisoned for up to six months, unless the decoration lied about is the Medal of Honor, in which case imprisonment could have been up to one year. In United States v. Alvarez, the U.S. Supreme Court ruled that the Stolen Valor Act was an unconstitutional abridgment of the freedom of speech under the First Amendment, striking down the law in a 6 to 3 decision.
Explanation:
I Will Mark Brainliest!!!
Answer:
A
Explanation:
Hopefully this helps
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Question: If you are traveling by train and the trip is 125 miles and takes 2 hours winding through the mountains, a) whats average speed? b) how would this be different if the train in each of the following situations- Train at rest, Train traveling at constant speed in a straight line, and the Train with a braking force (the train in the middle of coming to a stop)
PLEASE ANSWER ALL ASAP
Answer:
Average speed 62.5 miles an hour. If the train was traveling at a constant speed in a straight line it would be much faster on getting to its destination
Explanation:
The attracting and repelling forces of magnets are used in countless objects, from refrigerator doors to maglev trains.
Refrigerator doors use the attraction of magnets to stay closed, while maglev trains use magnetic repulsion to hover
above rails. The center magnet in the picture is hovering between two magnets, making it appear to float. Which best
explains how the center magnet is able to hover between two other magnets?
Answer:
the magnets can hover because like poles repel each other, causing the magnet in the center to float. so you have a South Pole of the top magnet facing down to the South pole of the middle magnet and the bottom would have to be North on top and south on the bottom.
Two trucks parked at a loading dock exert a gravitational force,
F, on each other. The cargo from each truck is unloaded so that
the mass of each truck becomes one-half of its original value.
Which of the following represents the present gravitational
force between the trucks?
Answer:
F/4
Explanation:
Quizzlet
What is the thermal energy least to greatest
A cup of coffee
An ocean
An ice cube
A cooked turkey
A huge iceberg
Answer:
A huge ice berg
An ice cube
An ocean
A cup of coffee
A cooked turkey
A pendulum swings back and forth. Is there energy in the system?
Answer:
yes
Explanation:
A pendulum should be able to contain enough energy to constantly be moving
If you add an additional neutron to an atomwhat do you create?
Answer:
However, if you add a thousand neutrons, you will be creating one super-radioactive atom. Neutrons play a major role in the mass and radioactive properties of atoms. You may have read the page on isotopes. Isotopes are created when you change the normal number of neutrons in an atom.
Explanation:
The neutron is a subatomic particle, symbol n or n⁰, which has a neutral (not positive or negative) charge and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, and each has a mass of approximately one atomic mass unit, they are both referred to as nucleons. Their properties and interactions are described by nuclear physics.
Descibe energy transtormations in your own words