Asked by COFFEE
For two sounds whose sound levels differ by 69 dB, find the ratios (greater value / smaller value) of the following values.
(a) the intensities
Intensity Final/Intensity Initial =
log^-1 (69 / 10) = 7.9x10^6
(b) the pressure amplitudes
(c) the particle displacement amplitudes
I am not sure how to find the ratios for b and c. I reviewed the equations relating to pressure and displacement amplitudes but I cannot come up with anything.
Both the pressure-amplitude and displacement ratios are the square root of the intensity (power) ratio.
Ah! thanks so much :)
(a) the intensities
Intensity Final/Intensity Initial =
log^-1 (69 / 10) = 7.9x10^6
(b) the pressure amplitudes
(c) the particle displacement amplitudes
I am not sure how to find the ratios for b and c. I reviewed the equations relating to pressure and displacement amplitudes but I cannot come up with anything.
Both the pressure-amplitude and displacement ratios are the square root of the intensity (power) ratio.
Ah! thanks so much :)
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