The most energy-efficient form of transportation in the animal kingdom is a human on a bicycle. A basic physics principle that helps explain the bicycle's high efficiency [relative to other technologies for human transportation] is
A) the law of conservation of energy.
B) the law of gravity.
C) the second law of thermodynamics.
D) the electromagnetic force law.
E) the work-energy principle.
C
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The relationship between the rotation of Mercury and its revolution is referred as a(n) _______________
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Impulse: A golf club exerts an average horizontal force of 1000 N on a 0.045-kg golf ball that is initially at rest on the tee. The club is in contact with the ball for 1.8 ms. What is the speed of the golf ball just as it leaves the tee?
A. 30 m/s B. 35 m/s C. 40 m/s D. 45 m/s E. 50 m/s
If the radius in which an object moves in uniform circular motion is tripled while the speed remains constant the centripetal acceleration is multiplied by a factor of
A. 9 B. 3 C. 1 D. 1/3 E. 1/9
In the Bergeron process, condensation occurs on ______________
Fill in the blank(s) with correct word