PHYS 201 Midterm: PHYS 201 TAMU Fall 11 Exam 4 Solutions
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No work needs to be shown; no partial credit given. (6 pts) 1. An organ pipe is open at one end and closed at the other end. If the wavelength of the first overtone standing wave is 1. 60 m, what is the length of the pipe"? (a) 1. 60 m (51. 20m (cty0m (d) 0. 40 m (a)3. 20m (f) none of the above answers (6 pts) 2. A stationary whistle emits sound waves with frequency 600 hz. The speed of sound in air is 340 m/s. If you are moving away from the whistle at a speed of 40. 0 mis, what frequency do you hear? (a) 537 hz. 9hz (d) 671 hz (e) none of the above answers (6 pts) 3. In an adiabatic process of an ideal gas, the gas is compressed to one-third of its original volume. this process, the temperature of the gas. In (a) decreases (c) stays the same (6 pts) 4.
