John's mass is half the mass of Jill. They both start walking and John moves twice as fast as Jill. What is the ratio of the kinetic energy of Jill to the kinetic energy of John?
A) 4
B) 2
C) 1
D) 1/2
E) 1/8
D
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Acceleration has dimension 
Use dimensional analysis to determine the ratio of accelerations for car A to car B, if car A travels a given distance in half the time required by car B.
A. 2
B. 4
C. 
D. 1/4
E. 1/2
F. 
The highest peak on Venus is called:
A) Shif. B) Gula. C) Cleopatra. D) Maxwell. E) Lakshmi.
If Q = 350 ?C and I = 4.0 mA in the circuit segment shown below, determine the potential difference, VA?VB.
A. ?30 V B. +80 V C. +40 V D. ?40 V E. +10 V
A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample?
A) It does not change. B) It quadruples. C) It doubles. D) It halves. E) none of the above