What is the symbol for the element copper?
a. Co
b. Ce
c. Cr
d. Cu
d
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The process by which raindrops are formed by the collision of droplets is called ______________
Fill in the blank(s) with correct word
A 60-kg person rides down an icy hill of 20° slope while standing on a 3.0-kg flat-bottomed bathroom scale. Assume there is no frictional force between the bottom of the scale and the hill. The static friction force the scale exerts on the person is
a. 0 N. b. 201 N. c. 211 N. d. 553 N. e. 580 N.
A bar magnet is falling through a loop of wire with constant velocity. The north pole enters first. As the south pole leaves the loop of wire, the induced current (as viewed from above) will be
a. clockwise. b. counterclockwise. c. zero. d. along the length of the magnet.
A 2.0-kg block is projected down a plane that makes an angle of 20° with the horizontal with an initial kinetic energy of 2.0 J. If the coefficient of kinetic friction between the block and plane is 0.40, how far will the block slide down the plane before coming to rest?
a. 3.0 m b. 1.8 m c. 0.30 m d. 1.0 m e. 1.3 m