The force between a 100 kg man and the Earth is 980 N. How close must two protons (1.6 X 10-19 C) be to generate the same force?

The distance between two protons to generate 950N of force is 0.49 X 10⁻¹⁵ m

Explanation:

Given:

Mass of man, m = 100 kg

Force between man and earth = 980 N

Charge of proton, q = 1.6 X 10⁻¹⁹C

Same force is generated between them

Distance between two protons, r = ?

According to Coulomb's law:

where,

k is Coulomb's constant

k = 9 X 10⁹ Nm²/C²

According to the question:

Solving the equation:

Therefore, the distance between two protons to generate 950N of force is 0.49 X 10⁻¹⁵ m

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray