The correct answer is:
<span>C: in the protons and neutrons of an atom
In fact, the nuclear energy refers to the binding energy of the nucleons (protons and neutrons) of an atom. The protons and the neutrons are held together by the strong nuclear interaction, one of the four fundamental forces of nature, and the energy associated to this interaction is called nuclear energy.
</span>
The tangential speed of an orbiting object is 
Explanation:
The tangential speed of an orbiting object is defined as the ratio between the distance covered in one revolution and the period of revolution:

where
d is the distance covered during one period
T is the orbital period
However, the distance covered during one period is the circumference of the circle:

where
r is the radius of the circle
Substituting the 2nd equation into the 1st equation, we find:

So, this is the final expression for the tangential speed of an orbiting object.
Learn more about circular motion:
brainly.com/question/2562955
brainly.com/question/6372960
#LearnwithBrainly
<span>The correct answer is an incident ray. The ray that is reflected is always reflected at the same angle at which the incident ray hits the surface. This of course only applies if it hits a straight surface, since hitting a lense would be different as it might reflect under a different angle or it might not even reflect.</span>