A one-kilogram gold ingot is carried from the bottom of the ...

[moongchi]

A one-kilogram gold ingot is carried from the bottom of the Eiffel tower to the top, 300 m above ground level. By what amount does its mass change?
 
  A) Its mass does not change.
  B) Its mass increases by 3.27  10-14 kg.
  C) Its mass decreases by 3.27  10-14 kg.
  D) Its mass increases by 1.64  10-14 kg.
  E) Its mass decreases by 1.64  10-14 kg.

Question 2

Three point charges are placed on the x-axis. A charge of +2.0 C is placed at the origin, -2.0 C to the right at x = 50 cm, and +4.0 C at the 100 cm mark.
 
  What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

[hollysheppard095]

Answer to Question 1

B

Answer to Question 2

0.072 N, toward the right

[moongchi]

Excellent

[ryansturges]

Great answer, keep it coming