In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift? In 1960 Mrs. Maxwell Rogers of Tampa, Florida, reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about 1/4 of the car's weight) by 5.0 cm, how much work did her force do on the car?
What will be an ideal response?
Answer:
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A) intelligent design B) naturism C) panspermia D) chemical evolution
Planning to elope with her boyfriend, Janice slides down a rope from her fourth story window. As she slides down the rope, she tightens harder on the rope which of course increases the tension in the rope
When the upward tension in the rope equals Janice's weight A) Janice will slow down. B) Janice will speed up. C) Janice will continue down at constant speed. D) the rope will break. E) Janice will stop moving down the rope.
Relative to a fossil-fuel plant, a nuclear power plant produces
A) more electricity. B) less heat and smoke. C) less pollution. D) all of the above E) none of the above
Ohm's Law: For the graph shown in the figure, what physical quantity does the slope of the graph represent for ohmic material?
A. current B. resistivity C. 1/(current) D. power E. 1/(resistivity)