Suppose that the electric force between two objects is 2 N and ...

[lindiwe]

Suppose that the electric force between two objects is 2 N and that you then double the distance between the objects. The new force is
 
  A) 1 N. B) 0.25 N. C) 0.5 N. D) 4 N. E) 8 N.

Question 2

A conducting sphere 45 cm in diameter carries an excess of charge, and no other charges are present.
 
  You measure the potential of the surface of this sphere and find it to be 14 kV relative to infinity.
  (k = 1/40 = 8.99  109 N  m2/C2 ) The excess charge on this sphere is closest to
  A) 0.35 nC.
  B) 79 nC.
  C) 315 nC.
  D) 350 nC.
  E) 700 nC.

[AmberC1996]

Answer to Question 1

C

Answer to Question 2

D

[lindiwe]

TYSM

[cpetit11]

Excellent