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Author Question: Two people are talking at a distance of 3.0 m from where you are, and you measure the sound ... (Read 70 times)

Cooldude101

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on: Jul 29, 2018
Two people are talking at a distance of 3.0 m from where you are, and you measure the sound intensity as 1.1  10-7 W/m2. Another student is 4.0 m away from the talkers.
 
  Calculate a reasonable estimate for the sound intensity that the other student measures. A) 6.2  10-8 W/m2
  B) 1.5  10-7 W/m2
  C) 8.3  10-8 W/m2
  D) 7.8  10-7 W/m2
  E) 2.5  10-8 W/m2

Question 2

A certain glass window reduces the intensity level of the sound from 72 dB to 47 dB. By what factor is the acoustic power reduced by this glass window?
 
  A) 3.2  10-3
  B) 2.2  10-2
  C) 5.6  10-2
  D) 1.0  10-1
  E) 1.5  10-1
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manuelcastillo

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Cooldude101

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Reply 2 on: Jul 29, 2018
Excellent

elyse44

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Reply 3 on: Yesterday
Gracias!

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