Author Question: The force of attraction that a -40.0 C point charge exerts on a +108 C point charge has magnitude ... (Read 194 times)

NguyenJ · **on:** Jul 29, 2018

The force of attraction that a -40.0 C point charge exerts on a +108 C point charge has magnitude 4.00 N. How far apart are these two charges? (k = 1/40 = 8.99 109 N m2/C2)

A) 2.10 m
B) 3.67 m
C) 3.12 m
D) 2.49 m
E) 1.13 m

Question 2

When a 6.00-F air-filled capacitor has a charge of 40.0 C on its plates, how much potential energy is stored in this capacitor?

A) 103 J
B) 113 J
C) 123 J
D) 133 J
E) 143 J