Explanation:
It is given that,
Momentum of the photon, 
(a) We need to find the wavelength of this photon. It can be calculated using the concept of De-broglie wavelength.
h is the Planck's constant
or
(b) The wavelength lies in the group of ultraviolet rays. The wavelength of UV rays lies in between 400 nm to 10 nm.
Answer:
the center of mass rises because the whole object rises up on the ramp thing so the center of mass rises
Hope it helps!
Explanation:
If she measures the angle between the mirror and an incident ray and finds that it is 30°, then the angle of the incidence would be 60° and the angle of the reflection would be 60° as well because of the laws of the reflection.
<h3>What is the law of reflection?</h3>
The law of reflection states that when a ray of light reflects back from a surface the angle of incidence of light on a surface is equal to the angle of reflection.
As given in the problem statement A student does an experiment with a mirror. She measures the angle between the mirror and an incident ray and finds that it is 30°.
the angle of incidence = 90° - 30°
=60°
As per the laws of the reflection
the angle of the incidence = angle of reflection
the angle of the reflection = 60°
Thus, the angle of the incidence would be 60° and the angle of the reflection would be 60° as well.
To learn more about the law of reflection here;
brainly.com/question/18772331
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Answer: The surface of the pad pushes the rocket up while gravity tries to pull it down. As the engines are ignited, the thrust from the rocket unbalances the forces, and the rocket travels upward. Later, when the rocket runs out of fuel, it slows down, stops at the highest point of its flight, then falls back to Earth.
