If you do work on a skateboard loaded with friends in one-third the usual time, you expend
A) one third as much power.
B) the usual power.
C) three times the usual power.
D) need more information.
Answer: C
You might also like to view...
Since 9/11 public health has emerged as a front-line defense against bioterrorism and other threats to personal security and safety.
a. true b. false
A ball rolls along a horizontal track in a certain time. If the track has a dip in it, the time to roll the length of the track will be
A) less. B) the same. C) more.
Consider the star to which the arrow points. How is it currently generating energy?
A) by core hydrogen fusion B) by hydrogen shell burning around an inert helium core C) by gravitational contraction D) by core helium fusion combined with hydrogen shell burning E) by both hydrogen and helium shell burning around an inert carbon core
A race car, traveling at a constant speed of 50 m/s, drives around a circular track of radius 250 m. What angular acceleration does it experience?
A) zero B) 1.0 × 104 rad/s2 C) 6.3 × 102 rad/s2 D) 1.0 × 101 rad/s2 E) 2.0 × 104 rad/s2