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State one advantage and one disadvantage of using a plane mirrior as a driving mirrior
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Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?
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How many neutrons does element x if itβs atomic number is 28 and its mass number is 87
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The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?
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What is the change in momentum in a perfectly elastic collision of a ball that has a mass of 1kg and...
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