Two ice skaters push off against one another starting from a stationary position
The 45.0-kg skater acquires a speed of 0.375 m/s. What speed does the 60.0-kg skater acquire? Assume that any other unbalanced forces during the collision are negligible.
A) 0.500 m/s
B) 0.281 m/s
C) 0.375 m/s
D) 0.750 m/s
E) 0.000 m/s
B
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A. wavelength/1 B. wavelength/2 C. wavelength/3 D. wavelength/4
Consider wiggle formula 
for a transverse wave, where b and c are constants and ( ) is some arbitrary function. Is this a traveling wave model? If so, in what direction does it travel?
A. In the +x direction. B. In the ?x direction. C. The wave does not move. D. In the y or z direction because the wave is transverse.
Compare the internal energy of one gram of steam to that of one gram of water if both are at 100°C.
A. The internal energy of the water and steam are the same B. The internal energy of the steam will be higher C. The internal energy of the water will be higher
How many degrees of hardness are defined
on the Mohs hardness scale? a) 3 b) 7 c) 10 d) 12