Author Question: A person walks in a distance x northward, turns around and walks a distance 7.00x southward. If the ... (Read 153 times)

fahad · **on:** Jul 29, 2018

A person walks in a distance x northward, turns around and walks a distance 7.00x southward. If the total displacement of the person from his starting position is 400 m south. What was the total distance walked?

A)

421 m

B)

457 m

C)

515 m

D)

533 m

E)

400 m

Question 2

Outside a spherically symmetric charge distribution of net charge Q, Gauss's law can be used to show that the electric field at a given distance

A)

must be zero.
B)

must be directed outward.
C)

acts like it originated in a point charge Q at the center of the distribution.
D)

must be directed inward.
E)

must be greater than zero.