A diehard music lover still prefers to listen to his vinyl records, which rotate at 33^1/3 revolutions per minute. If he listens for an average of three hours per day, estimate the order of magnitude for the number of revolutions his turntable makes in a year.

Question

Quizplus · Accepted Answer

The turntable makes 33^1/3 revolutions per minute, which is 33.33 revolutions per minute. In three hours, it makes 33.33 * 3 = 100 revolutions. In a year, it makes 100 * 365 = 36,500 revolutions. The order of magnitude is 10⁴.

A Diehard Music Lover Still Prefers to Listen to His