Which of these is the reason why sound can be propagated away from the source? a. condensations have higher pressure than normal air b. rarefactions expand the air c. condensations increase amplitude d. rarefactions increase wavelength
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Which of these is the reason why sound can be propagated away from the source?
a. condensations have higher pressure than normal air
b. rarefactions expand the air
c. condensations increase amplitude
d. rarefactions increase wavelength
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