Suppose you put two protons near each other. Because of the electromagnetic force, what will the two protons do?
A) vollide
B) remain stationary
C) attract each other
D) repel each other
E) join together to form a nucleus
D) repel each other
Physics & Space Science
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Which is the most common state of matter in the universe?
a. solid b. liquid c. gas d. plasma e. superfluid
Physics & Space Science
When a crate of mass m is dragged a distance d along a surface with coefficient of kinetic friction ?k, then dragged back along the same path to its original position, the work done by friction is
a. 0. b. ??kmgd. c. +?kmgd. d. ?2?kmgd. e. +2?kmgd.
Physics & Space Science
The units of momentum are
A. ML/T.
B. M/T.
C. 
D. 
E. 
Physics & Space Science
A pulley has two supporting strands. To lift a load 1 meter means you will have to pull a distance of
A) 1/2 m. B) 1 m. C) 2 m. D) more than 2 m.
Physics & Space Science