Physics, 12.08.2020 08:01 sierravick123owr441
Jim is playing with a 1–meter–long pendulum that is hooked 2 meters above the ground. He lifts the pendulum's bob to a height of 2 meters above the ground and then releases it. Potential energy is assigned zero value at the ground level. Which statement is true about this problem?
Answers: 3
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Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
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If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.
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Jim is playing with a 1–meter–long pendulum that is hooked 2 meters above the ground. He lifts the p...
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