Physics

Physics, 30.11.2019 05:31, taviiii3993

If the work put into a lever is 930 joules and the work accomplished is 870 joules, the efficiency of the lever is
107%
100%
94%
60%

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Physics, 04.07.2019 07:20, bbrooks9827

If the work put into a lever is 25.0 joules and the work done by the lever is 20.0 joules, what is the efficiency of the lever? 100% because energy must be conserved. 80.0% 45.0% 5.0%

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Physics, 31.07.2019 22:30, rosehayden21

Suppose you put in 100 j of work on a lever and get out 93 j of work. what is the efficiency of the lever and how much of the work input is lost as heat in joules?

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Physics, 08.11.2019 20:31, mistymjoy

Need 1. a 2-kg toy car accelerates from 0 to 5 m/s. a. 25 joules of work is done by the object. b. 25 joules of work is done on the object. c. 75 joules of work is done by the car. d. 75 joules of work is done on the car. e. no work is done on or by the object. 2. a 2-kg toy car originally moving at 5 m/s is brought to rest. a. 25 joules of work is done by the object. b. 25 joules of work is done on the object. c. 75 joules of work is done by the car. d. 75 joules of work is done on the car. e. no work is done on or by the object. 3. a 2 kg toy car is held at a height of 3.75 m above the floor. a. 25 joules of work is done by the object. b. 25 joules of work is done on the object. c. 75 joules of work is done by the car. d. 75 joules of work is done on the car. e. no work is done on or by the object. 4. a 2-kg toy car accelerates from 5 to 10 m/s. a. 25 joules of work is done by the object. b. 25 joules of work is done on the object. c. 75 joules of work is done by the car. d. 75 joules of work is done on the car. e. no work is done on or by the object. 5. a 2-kg toy car accelerates from 10 to 5 m/s. a. 25 joules of work is done by the object. b. 25 joules of work is done on the object. c. 75 joules of work is done by the car. d. 75 joules of work is done on the car. e. no work is done on or by the object.

Answers: 2

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Physics, 05.12.2019 10:31, pukakchiu

If the work put into a lever is 25.0 joules and the work done by the lever is 20.0 joules, what is the efficiency of the lever?

Answers: 2

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