A 2 kg ball is floating in water. The volume displaced by the ball is
A. 0.005 
B. 0.004
C. 0.003
D. 0.002
E. 0.001
D. 0.002
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A particle with charge -40.0 nC is on the x axis at the point with coordinate x = 0. A second particle, with charge -20.0 nC, is on the x axis at x = 0.500 m. Is there a point at a finite distance where the electric potential is zero?
1.Yes; it is to the left of x = 0. 2.Yes; it is between x = 0 and x = 0.500 m. 3.Yes; it is to the right of x = 0.500 m. 4.No.
Why are novae much more common than supernovae?
A. It takes a special type of white dwarf to go supernova, but any old white dwarf can go nova. B. Novae are actually brighter than supernovae and so are easier to find. C. A white dwarf's mass slowly decreases with each nova but the whole white dwarf is completely obliterated during a supernova D. Both B and C E. None of the above
A metal block sits on top of a floating wooden block. If the metal block is suspended from the bottom of the wooden block, what happens to the volume of the wooden block that is submerged in the water?
Which jar will roll down an incline in the shortest time, an empty one or one filled with peanut butter?
A) the empty jar B) both reach the bottom at the same time C) the filled jar D) need more information