A box is placed on a table which rests on the floor. The box ...

[Diane]

A box is placed on a table which rests on the floor. The box pushes on the table; the reaction force to the box's push on the table is the table's push on the floor.
 
  A) True
  B) False

Question 2

A -7.0-C point charge has a positively charged object in an elliptical orbit around it. If the mass of the positively charged object is 1.0 kg and the distance varies from 5.0 mm to 20.0 mm between the charges,
 
  what is the maximum electric potential difference through which the positive object moves?
  (k = 1/40 = 8.99  109 N  m2/C2)
  A) 9.4 MV
  B) 3.2 MV
  C) 4.2 MV
  D) 16 MV

[memslove]

Answer to Question 1

B

Answer to Question 2

A

[Diane]

Gracias!

[Viet Thy]

Excellent