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Author Question: A 0.25-m string, vibrating in its sixth harmonic, excites a 0.96-m pipe that is open at both ends ... (Read 75 times)

big1devin

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on: Jul 29, 2018
A 0.25-m string, vibrating in its sixth harmonic, excites a 0.96-m pipe that is open at both ends into its second overtone resonance. The speed of sound in air is 345 m/s. The common resonant frequency of the string and the pipe is closest to
 
  A) 540 Hz.
  B) 360 Hz.
  C) 450 Hz.
  D) 630 Hz.
  E) 700 Hz.

Question 2

An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion, the gas absorbs 200 kJ of heat.
 
  (a) What is the change in the internal (thermal) energy of the gas during the expansion? (b) How much work does the gas do during the expansion?


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Liddy

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) zero (b) 200 kJ


big1devin

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

ghepp

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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