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Q1. Kelli weighs 417 N, and she is sitting on a playground swing that hangs 0.44 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. Imagine that air resistance is negligible.
Q2. A 1.52m cylinder of radius 1.12 cm is made of a complicated mixture of materials. Its resistivity depends on the distance x from the left end and obeys the formula p(x) = a + bx^2, where a and b are constants. At the left end, the resistivity is 2.25*10^-8 ohm-meters, even as at the right end it is 8.50*10^-8 ohm-meters.
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