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Q. When a circular plate of metal is heated in an oven, its radius increases at the rate of 0.01 cm/sec. At what rate is the plate's area increasing when the radius is 50 cm? (Give your answer correct to 2 decimal places.)

Q. The 100 kg block takes 5.9 s to reach the floor after being released from rest. What is the mass of the block on the left?

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