Author Question: A1-N electrostatic force is exerted on each of the two point charges when they are 2 cm apart. If ... (Read 56 times)

crobinson2013 · **on:** Jul 29, 2018

A1-N electrostatic force is exerted on each of the two point charges when they are 2 cm apart. If they are moved to a new separation of 8 cm, what is the magnitude of the electric force exerted on each of them?

A) 2 N
B) 1/2 N
C) 1/4 N
D) 1/8 N
E) 1/16 N

Question 2

The critical angle for an air-glass interface is 42.6. A light ray in air hits the interface, and the reflected ray is 100 polarized. What is the angle of refraction for that ray?

A) 47.4
B) 55.9
C) 24.3
D) 65.7
E) 34.1