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Solve the all parts of given problem:

Problem: A grandfather's clock is calibrated at a temperature of 22°C. Assume that the pendulum is a thin brass rod of negligible mass with a heavy bob attached to the end.

Part A: On a cold day, when the temperature is 9°C, does the clock run fast or slow?

Part B: How much does it gain or lose in a 24 h period?

______ s

Please show me how work it out above problem.

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