Author Question: A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is ... (Read 59 times)

jrubin · **on:** Jul 29, 2018

A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

A)

They separate further.
B)

They move closer together.
C)

They are unaffected.
D)

cannot be determined without further information

Question 2

A 30 N-force toward the west is applied to an object. The object moves 50 m east during the time the force is applied. What is the change in kinetic energy of the object?

A)

0.0 J

B)

1.7 J

C)

1.0 J

D)

-1500 J

E)

750 J