The highest musical note on a piano has a frequency of, Ask an Expert

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1. Describe how a device equipped with an ultrasonic speaker, a microphone, and a timer could be used to measure the distance from the device to the wall.

2. The highest musical note on a piano has a frequency of 4,186Hz. Why would a tape of piano music sound terrible if played on a tape player that reproduces frequencies only up to 5,000Hz?

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