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If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
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A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.
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What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?
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Give the relation of resistance of wire with its length and thickness
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