Your density is slightly greater when you are
A) at the top of a mountain.
B) submerged deep in water.
C) in a fast-moving vehicle.
D) none of the above
Answer: B
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A brass box is in the shape of a cube. The coefficient of linear thermal expansion is 
If the temperature of the box is increased by 20
then what is the fractional change in the volume of the box?
A. 0.08% B. 0.11% C. 0.15% D. 0.25% E. 0.30%
A uniform piece of wire, 20 cm long, is bent in a right angle in the center to give it an L-shape. How far from the bend is the center of mass of the bent wire?
A) 2.5 cm B) 3.5 cm C) 4.5 cm D) 5.0 cm E) 7.1 cm
The volume of water displaced by a floating 20-ton boat
A) is 20 cubic meters. B) is the volume of 20 tons of water. C) is the volume of the boat. D) depends on the shape of the ship's hull. E) none of the above
A heavily loaded boat is floating in a pond. The boat sinks because of a leak. What happens to the surface level of the pond?
a. It stays the same. b. It goes up. c. It goes down. d. More information is needed to reach a conclusion.