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March 4, 2015

March 4, 2015

Posted by **HelpPlease** on Sunday, December 5, 2010 at 9:30pm.

Noise level of 1200 flies = ??dB

HELP: Using the formula for decibels and the given information, you can calculate the ratio I / I0 for 1 fly.

HELP: If you assume that 1200 flies make 1200 times as much noise as 1 fly, what is I / I0 for 1200 flies?

- Physics -
**drwls**, Sunday, December 5, 2010 at 10:26pm1200 flies will have 1200 times the sound power or one at the same distance

10 log(10)1200 = 3.1 x 10 = 31 dB more than 43 db, or 74 dB

I don't understand the last hint.

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