How much work is required to move a 1 nC charge from an electric potential of 0 V to a potential of 18V? a) 56 µJ
b) No work is required by an external force because this is the natural movement of the charge.
c) 18 J
d) 56 MJ
e) 18GJ
f) 18 nJ

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

The law of reflection states that the angle of reflection is equal to the angle of

Which statements did both aristotle and ptolemy assume? check all that apply.