3. The sound level of a source of sound is 10 dB. What is the intensity of 1000 sources of sound? The minimum intensity lo = 10-12 Wm-2

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3. The sound level of a source of sound is 10 dB. What is the intensity of
1000 sources of sound? The minimum intensity lo = 10-12 Wm-2
4. A certain earthquake in 1989 had a magnitude of 5 on the Richter scale
How many joules were released?
Transcribed Image Text:3. The sound level of a source of sound is 10 dB. What is the intensity of 1000 sources of sound? The minimum intensity lo = 10-12 Wm-2 4. A certain earthquake in 1989 had a magnitude of 5 on the Richter scale How many joules were released?
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