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How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°c to 363°c? the answer is expressed to the nearest whole number.
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The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?
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Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
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You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move
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Cart a, with a mass of 0.4 kg, travels on a horizontal air track at 6 m/s and hits cart b, which has...
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