Physics, 22.08.2019 00:10 Joshuafranklindude
Adiesel engine performs 2100 j of mechanical work and discards 4500 j of heat each cycle. part a)
how much heat must be supplied to the engine in each cycle?
part b)
what is the thermal efficiency of the engine?
Answers: 2
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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?
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Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
Answers: 2
Adiesel engine performs 2100 j of mechanical work and discards 4500 j of heat each cycle. part a)
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