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18. Waves & Sound - 3! 2부
18. Waves & Sound / Sound Intensity / 문제 3
문제 3

Sound is recorded by a microphone using the vibrations caused by the sound on a diaphragm. If a microphone has a diaphragm diameter of 12.7 mm, how much energy does a singer singing at 90 dB supply to the diaphragm?