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The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity
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What part of the ear is names after tools, such as the hammer and the anvil?
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Aspring that is stretched 23 cm from its equilibrium point experiences a force of 103 n .now much fo...
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