### By what percent does the period of oscillation change

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Q. At a large business, employees must report to work at 7:30 A.M. The arrival times of employees is approximately symmetric and mound-shaped with mean 7:22 A.M. and standard deviation 4 minutes. a psychological study determinded that the typical worker needs 5 minutes ti adjust to thie surroundings before beginning duties. what percent of his business' employees arrive early enough to make this adjustment?

Q. The springs of a 512-kg motorcycle have an effective force constant of 9130 N/m.

By what percent does the period of oscillation change when a 95 kg person rides the motorcycle?

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