Physics, 02.03.2020 17:04, loraine8401
The efficiency of a pulley system is 64 percent. The pulleys are used to raise a mass of 78 kg to a height of 4.0 m. What force is exerted on the rope of the pulley system if the rope is pulled for 24 m in order to raise the mass to the required height
Answers: 2
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When an object is heated it contracts. a. true b. false
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In an experiment, how can i change human errors? be specific.
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Physics, 22.06.2019 12:20, ginachuquiano450
Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
Answers: 1
The efficiency of a pulley system is 64 percent. The pulleys are used to raise a mass of 78 kg to a...
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