The planets in the solar system
A) revolve around the Sun in the same direction
B) orbit around the Sun in nearly the same plane
C) have nearly circular orbits
D) all of these are true
D
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If the radius of the earth is 6400.0 km and the atmosphere is 10.0 km high, then the volume of air around the earth is
A. 
B. 
C. 
D. 
In analyzing electric circuits containing a battery and at least one resistor, what is the change in potential across a resistor as one moves through it in the direction of the current?
a) +i²R b) -i²R c) +iR d) -iR e) zero
Danny Diver weighs 500 N and steps off a diving board 10 m above the water. Danny hits the water with kinetic energy of
A) 10 J. B) 500 J. C) 510 J. D) 5000 J. E) more than 5000 J.
What is the work output of a heat engine whose thermal energy input is 400 J and whose exhaust is 300 J?
A) 200 J B) 400 J C) 700 J D) 100 J E) 300 J