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The decibel scale is used to measure the perceived loudness of a sound.
The decibel scale is used to measure the perceived loudness of a sound. TRUE.
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Asked 9/23/2014 6:50:06 PM
Updated 7/20/2015 2:43:16 PM
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The decibel scale is used to measure the perceived loudness of a sound. TRUE.

Added 7/20/2015 2:43:16 PM
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Telescopes are examples of concave mirrors.
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Which of the following is the mathematical formula for calculating a wavelength?
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Updated 9/24/2014 7:50:12 PM
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= V / f is the mathematical formula for calculating a wavelength; where V = Speed of the wave,
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Added 9/24/2014 7:50:12 PM
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