Question 1
An asteroid of mass 58,000 kg carrying a negative charge of

is

from a second asteroid of mass

carrying a negative charge of

What is the magnitude of the net force the asteroids exert upon each other, assuming we can treat them as point particles? (
G = 6.67 × 10
-11 N ∙ m
2/kg
2,
k = 1/4 πε
0 = 8.99 × 10
9 N ∙ m
2/C
2)
◦ 0.0062 N
◦ 570,000 N
◦ 510,000 N
◦ 0.000040 N
Question 2
Two electrons are

apart at closest approach. What is the magnitude of the maximum electric force that they exert on each other? (
e = 1.60 × 10
-19 C,
k = 1/4πε
0 = 9.0 10
9 N ∙ m
2/C
2)
◦ 2.3
× 10
10 N
◦ 2.3 N
◦ 5.8
× 10
-27 N
◦ 5.8
× 10
-25 N