Physics, 19.10.2021 01:00 kristadwsn
On Earth, a skydiver falls for 4 seconds. Assume there is no air resistance. How much does this skydiver's velocity change in 4 seconds?
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Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n
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Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.
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On Earth, a skydiver falls for 4 seconds. Assume there is no air resistance. How much does this skyd...
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