As you jump up and down on a floor, the support force by the floor experiences
A) changes.
B) no changes.
C) none of the above.
Answer: A
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While yet unproven, the proposed WIMPS would be:
A) massive like neutrons, but more elusive than neutrinos. B) made of only strong magnetic fields. C) rapidly decaying due to the weak nuclear force. D) changing charges and polarities too rapidly to pin down. E) the basic building blocks of neutrons and protons.
In keeping with its Greek god, Neptune probably contains a lot of water, in a slushy mantle ocean
Indicate whether the statement is true or false
The bigger diameter gears on the rear wheel of a multi-speed bike allow the rider to
A. decrease the moment of inertia of the wheel. B. increase the moment of inertia of the wheel. C. exert more force on the wheel. D. exert more torque on the wheel.
At every instant the ratio of the magnitude of the electric to the magnetic field in an electromagnetic wave in vacuum is equal to
a. the speed of radio waves. b. the speed of light. c. the speed of gamma rays. d. all of the above. e. only (a) and (b) above.