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Author Question: Calculate the intensity level in dB of a sound wave that has an intensity of 15 104 W/m2. (Read 97 times)

jenna1

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on: Aug 6, 2020

Question 1

Calculate the displacement amplitude (in m) of a 20 kHz sound wave in helium if it has a pressure amplitude of 8.0 × 10−3 N/m2. (ρ = 0.179 kg/m3, v = 972 m/s.)

◦
2.9 × 10−10

◦
3.7 × 10−10

◦
7.8 × 10−9

◦
2.4 × 10−9

◦
1.9 × 10−10


Question 2

Calculate the intensity level in dB of a sound wave that has an intensity of 15 × 10−4 W/m2.

◦
20

◦
200

◦
92

◦
9

◦
10
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by jenna1 on Aug 6, 2020

djpooyouma

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Reply #1 on: Aug 6, 2020
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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jenna1

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Reply 2 on: Aug 6, 2020
YES! Correct, THANKS for helping me on my review

mjenn52

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Reply 3 on: Yesterday
Excellent

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