Author Question: If the plane x = 4 m is an equipotential surface, in which of the following directions can the ... (Read 53 times)

humphriesbr@me.com · **on:** Jul 28, 2018

If the plane x = 4 m is an equipotential surface, in which of the following directions can the electric field be in the region immediately adjacent to this plane?
a. the positive y direction
b. both the positive and negative z directions
c. the positive x direction
d. more than one of these choices

Question 2

A 0.60-kg rock is swung in a circular path and in a vertical plane on a 0.25-m length string. At the top of the path, the angular speed is 12.0 rad/s. What is the tension in the string at that point?
a. 7.9 N
c. 22 N
b. 16 N
d. 6.5 N