What will most likely happen if a light wave moves through a solid?
2 answers:
<u>Answer:</u> the correct answer is it will decrease in speed.
<u>Explanation:</u>
There are 2 types of waves:
1. Longitudinal waves: These waves are the waves where the particles of the medium propagates in the direction of the wave. These waves requires a medium to travel. For Example: Sound Waves.
2. Transverse wave: These waves are the waves where the particles of the medium propagates perpendicular to the direction of the wave. These waves does not require a medium to travel. They can travel in vacuum also. For Example: Light waves.
Speed of light wave is constant in the vacuum which is but its speed decreases as it enters a medium. And, here the light is entering a solid having certain refractive index, so the speed would decrease.
Hence, the correct answer is it will decrease in speed.
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Answer:
Impulse = 322.5[kg*m/s], the answer is D
Explanation:
This method it is based on the principle of momentum and the amount of movement; and used to solve problems involving strength, mass, speed and time.
If units of the SI are used, the magnitude of the impulse of a force is expressed in N * s. however, when remembering the definition of the newton.
Now replacing the values on the following equation that express the definition of impulse
Explanation:
The given data is as follows.
radius (r) = 3.25 cm,
Now, we will calculate the tangential acceleration as follows.
Putting the given values into the above formula as follows.
=
= 37.7
Thus, we can conclude that the tangential acceleration of a point on the rim of the flywheel during this spin-up process is 37.7 .