A 45 efficient device uses chemical energy to generate 420
A 45% efficient device uses chemical energy to generate 420 J of electric energy.
How much chemical energy is used?
A second device uses twice much chemical energy to generate half as much electric energy. What is its efficiency?
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a goldfish is swimming at 320 cms toward the front wall of a rectangular aquarium the index of refraction of water is
a 150 kilogram bucket of water is suspended by a very light rope wrapped around a solid uniform cylinder 0300 meter in
a wooden plank rests on 2 soup cans laid on their sides each can has a diameter of 65 centimeter and the plank is 30
a horizontal pipe contains water at a pressure of 150 kpa flowing with a speed of 17 ms the pipe narrows to one half
a 45 efficient device uses chemical energy to generate 420 j of electric energyhow much chemical energy is usednbspa
two vehicles collide head on while each is traveling at 72 kmhr assume all their kinetic energy is transformed into the
a uniform drawbridge must be held at a 37 deg angle above the horizontal to allow ships to pass underneath the
responding to an alarm a 102 kilogram fireman slides down a pole to the ground floor 33 meter below the fireman starts
two parallel-plate capacitors 20microf each are connected in series to a 90 volt battery one of the capacitors is then
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