A conservative force on a particle moving along the x axis is given by 
. Which of the following is a potential that is associated with this force?
A.
B.
C.
D.
E.
Answer: D
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In general, what happens to the density and temperature of a gas as it expands?
A) It gets less dense and cooler. B) It gets denser and cooler. C) It gets less dense and hotter. D) It gets denser and hotter.
It is the day of the Summer Solstice. You notice that for you the Sun never sets. Who are you?
a) a macaw in the South American rain forest b) a penguin below the antarctic circle c) a polar bear above the arctic circle
Heat transfer that involves mass movement is
a. temperature. b. conduction. c. convection. d. radiation.
A point charge of 6.0 nC is placed at the center of a hollow spherical conductor (inner radius = 1.0 cm, outer radius = 2.0 cm) which has a net charge of ?4.0 nC. Determine the resulting charge density on the inner surface of the conducting sphere
a. +4.8 ?C/m2 b. ?4.8 ?C/m2 c. ?9.5 ?C/m2 d. +9.5 ?C/m2 e. ?8.0 ?C/m2