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Which of the following properties of a sound wave determines its loudness (or intensity): wavelength, speed, amplitude, or frequency?
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Which of the following properties of a sound wave determines its loudness (or intensity): wavelength, speed, amplitude, or frequency?

User Ricardo Velhote
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Answer: Amplitude

Explanation: The intensity or loudness of a sound depends upon the extent to which the sounding body vibrates (i.e the amplitude of vibration).

Loudness is measured in units called decibels and amplitude in metre

User Prafulfillment
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