Question: Is this correct? b.) what would be the sound level if the conversation intensity is tripled? 4. The formula B = 10 log (7 )

Is this correct? b.) what would be the sound level if the conversation intensity is tripled?

4. The formula B = 10 log (7 ) can be used to calculate the sound level, B decibels, where I is the intensity of the sound and I, is a reference intensity equal to 10"W/m . A conversation between two people is approximately 60 dB, while the threshold of pain caused by sound is considered to be 130 dB. 2 a. Determine how many times as intense the threshold of pain is than a conversation. B = 10 log( .) B = 10 log ( F.) 60 z 10 log/1 130 = 10log ( 70-T2) 10 - 12 13 = 109 (1.) 6 = 109 ( 70-12) I 10 - 12 = 1013 I - = 106 10- 12 I = 10 I = 10 - 6 10-6 = 107 ADLC Mathematics 30-1 21

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