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At approximately what frequency do most people perceive the least intense sounds? enter your answer numerically in hertz to two significant figures.
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At approximately what frequency do most people perceive the least intense sounds? enter your answer numerically in hertz to two significant figures.

User Serge Iroshnikov
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The range of frequency for human's ear is commonly reported to be 20 Hz-20 kHz. So, we can say that the least intense sound a human ear can hear has a frequency of approximately 20 Hz.
User Kris Jordan
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