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A heat engine that pumps water out of an underground mine accepts 700 kJ of heat and produces 250 kJ of work. How much heat does it reject, in kJ
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Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.
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The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
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How would a small bar magnet be oriented when placed at position x?
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A heat engine that pumps water out of an underground mine accepts 700 kJ of heat and produces 250 kJ...
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