The particles in the nucleus of an atom are approximately 10
The particles in the nucleus of an atom are approximately 1.00×1015 m apart, while the electrons in an atom are about 1.00×1010 m from the nucleus.
Part A
Calculate the electrical repulsion between two protons in a nucleus if they are 1.50×1015 m apart.
Part B
How many pounds would the force be?
Part C
If you were holding these protons, do you think you could feel the effect of this force? (yes or no)
Part D
Calculate the electrical attraction that a proton in a nucleus exerts on an orbiting electron if the two particles are 1.19×1010 m apart.
Part E
If you were holding the electron, do you think you could feel the effect of this force? (yes or no)
Solution
Part a
The force of electric repulsion between two protons each of charge q ,
and seperated by a distance R = 1.50×1015 m is
F = k q * q / R^2
= + ( 8.98*10^ 9 * 1.602 * 10^-19 *1.602 * 10^-19 ) / (1.50×1015 m)^2
Repulsive force F = 102.428 N
part B ) one pound of force = 4.44822 N
repulsive froce in pounds = 102.428 / 4.44822 = 23.026 pounds
Part C) yes ofcourse any one can feel 23.026 pounds in hands
Part D) The force of attraction between proton and electron
F = k q * q / R^2
= + ( 8.98*10^ 9 * 1.602 * 10^-19 *1.602 * 10^-19 ) / (1.19×1010 m )^2
= 1.627 *10^-8 N
Part E) No , since the force neglegible to feel.

