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Q.find the heat that flows in 1.0 s through a lead brick 15 cm long if the temperature difference between the ends of the brick is 8.5 degrees celsius. the cross sectional are of the brick is 12 cm squared

Q. A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.2 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing the block to then swing. If the block reaches a maximum height of h = 0.32 m, what was the initial speed of the bullet?

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