Please help This is for science and I don’t understand
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Physics, 21.06.2019 16:30
In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.
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Physics, 21.06.2019 22:10
Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley
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Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.
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What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest
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