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What is the difference between electrically neutral objects and electrically charged objects
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Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
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Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?
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Physics, 22.06.2019 14:00
Often called simply "velocity," this is the velocity of an object at a particular moment in time.
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If a 2kg block of copper is heated and a temperature increase of 50C is measured, how much energy ha...
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