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Why did ptolemy have to introduce multiple circles of motion for the planets instead of a single, simple circle to represent the planetâs motion around the sun?
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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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Physics, 22.06.2019 14:40
Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion
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What does H2CO3 stand for...
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