Physics, 13.07.2019 05:20 alyxxboothe
If a sound is 30 db and its absolute pressure was 66 x 10-9 pa, what must have been the reference pressure?
Answers: 1
Pa
     (1) 
= reference pressure
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If a sound is 30 db and its absolute pressure was 66 x 10-9 pa, what must have been the reference pr...
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