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5. 08, 3 What is the speed of sound at 520C? A) 1347 m/s B) 3.57 m/s C) 1,180 fu/s D) 361 m/s E) 186,000

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5. 08, 3 What is the speed of sound at 520C? A) 1347 m/s B) 3.57 m/s C) 1,180 fu/s D) 361 m/s E) 186,000 m/s 6. 08, 3 What is the speed of sound at 180C? A) 3,300 m/s B) 3.474 m/s C) 1, 147 ft./s D) 341 m/s E) 186,000 m/s 7. 08, 4 Determine the frequency of a sound whose wavelength is 2 meters and whose speed is 980 m/s. A) 4,520 Hz B) 145.2 Hz 678.3 Hz D) 490 Hz E) none of the above 8. 08, 4 Calculate the velocity of a sound whose wavelength is 3 cm and whose frequency is 1,235 Hz. A) 37.05 m/s B) 411.6 m/s C) 3650 cm/s D) 458 m/s E) 275 m/s 9. 08, 5 What is the wavelength of a sound that resonates in the air column of a 15 cm long closed tube? A) 30 cm B) 45 cm C) 60 cm D) 15 cm E) 75 cm 10. 08, 5 What is the wavelength of a sound that resonates in the air column of a 150 cm long closed tube? A) 600 cm B) 210 cm ") 315 cm D) 420 cm E) 530 cm 11. 08, 6 A person shoots a gun near a reflecting surface, and hears the echo 6 seconds after the shot. If the temperature is 150C, how far is the person from the reflecting surface? A) 2478 m. B) 2841 m C) 1017 m D) 3870 m 12. 08, 6 A person is standing near a reflecting surface. He shouts, and hears an echo 12 seconds later. If the temperature is 340C, how far is he from the surface? A) 1725 m B) 8625 m C) 2102 m D) 3300 m

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