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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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What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?
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Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?
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Awooden block has a mass of 562 g and a volume of 72 cm3. what is the density? 15 points !...
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