Author Question: On the average during good weather, the Earth has a positive surface charge. Which is the usual ... (Read 13 times)

Pineappleeh · **on:** Jul 28, 2018

On the average during good weather, the Earth has a positive surface charge. Which is the usual direction of the Earth's electric field at the Earth's surface?
a. down
b. up
c. some direction parallel to the Earth's surface
d. north.

Question 2

A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 7.00-s interval at a rate of 0.0500 rad/s2 . What angular displacement does the Ferris wheel undergo in this 7.00-s interval?
a. 4.48 rad
c. 4.73 rad
b. 2.50 rad
d. 0.500 rad