Which path correctly indicates the motion of the pendulum bob when it is cut at the instant it is at the top of its swing?
A. A
B. B
C. C
D. D
B. B
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A 100 kg mass has a density of 2000 
If the volume is decreased by 2% due to compression, then the density is
A. 3,010 
B. 2,940
C. 2,520
D. 2,440
E. 2,040
Which best describes the relationship between two systems in thermal equilibrium?
a. No net energy is exchanged. c. Masses are equal. b. Volumes are equal. d. The velocity is zero.
What makes a particle strange?
a. It can spontaneously change its charge. b. Its mass is too small to compare to other particles. c. Its mass is too large to compare to other particles. d. It decays at an inexplicably fast speed. e. It lasts much longer than expected.
Write the equation of a wave, traveling along the +x axis with an amplitude of 0.02 m, a frequency of 440 Hz, and a speed of 330 m/sec
a. y = 0.02 sin [880?(x/330 ? t)] b. y = 0.02 cos [880? x/330 ? 440t] c. y = 0.02 sin [880?(x/330 + t)] d. y = 0.02 sin [2?(x/330 + 440t)] e. y = 0.02 cos [2?(x/330 + 440t)]