7:33 PM Sun Dec 89 50%AU19 OSU Physics 1200 Nandyala Sample FinalPage 10 of 12Name:Recitation Instructor Name:(write on every page)(write on every page)33) The figures show some of the possible and not possible standing waves of sound in six organpipes of the same length. Each pipe has one end open and the other end closed. Which of thefigures do not illus trate possible resonant situations?(1)(4)A) 1 and 4B) 2 and 3C) 4 and 5D) 5 and 6E) 4, 5, and 6XXX(2)(5)(3)(6)34) The decibel level of a jackhammer is 125 dB relative to the threshold of hearing. Determinethe sound intensity produced by the jackhammer.1012A) 1.0 W/m?B) 3.2 W/m?C) 4.8 W/m?

Question
Asked Dec 9, 2019
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We know the answer is 5 and 6 but don’t understand why

7:33 PM Sun Dec 8
9 50%
AU19 OSU Physics 1200 Nandyala Sample Final
Page 10 of 12
Name:
Recitation Instructor Name:
(write on every page)
(write on every page)
33) The figures show some of the possible and not possible standing waves of sound in six organ
pipes of the same length. Each pipe has one end open and the other end closed. Which of the
figures do not illus trate possible resonant situations?
(1)
(4)
A) 1 and 4
B) 2 and 3
C) 4 and 5
D) 5 and 6
E) 4, 5, and 6
XXX
(2)
(5)
(3)
(6)
34) The decibel level of a jackhammer is 125 dB relative to the threshold of hearing. Determine
the sound intensity produced by the jackhammer.
10
12
A) 1.0 W/m?
B) 3.2 W/m?
C) 4.8 W/m?
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7:33 PM Sun Dec 8 9 50% AU19 OSU Physics 1200 Nandyala Sample Final Page 10 of 12 Name: Recitation Instructor Name: (write on every page) (write on every page) 33) The figures show some of the possible and not possible standing waves of sound in six organ pipes of the same length. Each pipe has one end open and the other end closed. Which of the figures do not illus trate possible resonant situations? (1) (4) A) 1 and 4 B) 2 and 3 C) 4 and 5 D) 5 and 6 E) 4, 5, and 6 XXX (2) (5) (3) (6) 34) The decibel level of a jackhammer is 125 dB relative to the threshold of hearing. Determine the sound intensity produced by the jackhammer. 10 12 A) 1.0 W/m? B) 3.2 W/m? C) 4.8 W/m?

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Expert Answer

Step 1

Air will not be able to penetrate a closed pipe end. Air molecules present at the very end are fixed. In other words, they cannot displace into the closed end. Hence, closed end of the pipe will have a displacement node. Therefore, figure 5 can’t represent an organ pipe open at one end.

Step 2

At the open end, air inside the organ pipe is in contact with atmospheric air at atmospheric pressure. Hence, the air particles at the open e...

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