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e correct answerís) unambiguously. Show your work for partial credit. 1. The period of a pendulum is the time it takes the pendulum to swing back and forth once. If ties that the period depends on are the acceleration of gravity,g and the length of the pendulum, I, what combination of g and I must the period be proportional to? (Acceleration has SI units of m/s) (a) g/l (b) gl (d) gl2 2. An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 16.2 m/s straight downward. What is the component of the apples impac velocity parallel to the surface of the slope? (a) 5.5 m/s (b) 12 m/s (c) 15 m/s (d) 8.7 m/s (e) 7.9 m/s
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