Two protons are located next to each other in the nucleus of a Carbon atom. Which of the four fundamental forces are greatest between them?

a. The weak nuclear force between them

b. The strong nuclear force holding them together in the nucleus

c. The gravitational attraction between them

d. The repulsion of their charges

d. the repulsion of their charges

Explanation:

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

the maxium height is 34m/s