Car A travels with speed v around curve number one, which has a radius r. Car B travels with speed 2v around curve number two, which has a radius 2r. The acceleration will be
A. zero for both cars.
B. greater for car B.
C. greater for car A.
D. the same for both cars.
Answer: B
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At a carnival game, two balls, identical in mass and radius, are made of steel and of rubber. They are offered as a means of knocking over a bowling pin by throwing them at the pin. If they are thrown with the same speed and hit the same spot on the bowling pin, which is more likely to knock the pin over?
A. The steel ball B. Without knowing more information this cannot be answered. C. The clay ball D. Both are equally likely since they have the same momentum
A system in a certain macro state has
microstates. Through some process, the system changes the number of microstates to 
What is the change in entropy for the process?
A. 
B. 
C. 
D. 
A neutron star detectable by its rapid rotation and strong magnetic field is called a(n) ________
Fill in the blank(s) with correct word
If a twin goes on a trip in a high speed rocket ship, when she returns home she will be younger than her twin sister who did not go on the trip because of
a. time dilation b. length contraction c. the equivalence of mass and energy d. the principle of relativity e. none of the above