Proportional Reasoning: In the absence of air resistance, a ball is thrown vertically upward with initial speed v. An identical ball is thrown upward with initial speed 2v. If the first ball reaches a maximum height h, what maximum height will the second ball reach?
A. 8h
B. 4h
C. 2h
D. 
h
E. h
Answer: B
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Aberration: Spherical lenses suffer from
A. both spherical and chromatic aberration. B. spherical aberration, but not chromatic aberration. C. chromatic aberration, but not spherical aberration. D. neither spherical nor chromatic aberration.
You are heating two chunks of metal of the same size and shape. One is made of lead and is heated to 400 K. The other is made of iron and is also heated to 400 K. Which of the following statements apply to the thermal radiation the two chunks emit?
A) The two spectra peak at the same wavelength. B) The spectra cannot be compared because they come from different materials. C) The lead spectrum peak is at a shorter wavelength than the iron spectrum peak. D) The lead spectrum peak is at a longer wavelength than the iron spectrum peak.
A solitary boy cannot balance on a seesaw with its fulcrum at its midpoint. If the fulcrum is moved to one-quarter the distance from the boy, balance is achieved when the weight of the boy is
A) less than the weight of the seesaw. B) equal to the weight of the seesaw. C) more than the weight of the seesaw. D) need more information
As a 3.0-kg bucket is being lowered into a 14-m-deep well, starting from the top, the tension in the rope is 9.0 N. The acceleration of the bucket will be:
a. 6.8 m/s2 downward. b. 9 m/s2 downward. c. zero. d. 3.0 m/s2 upward. e. 6.8 m/s2 upward.