Sound with a frequency of 250 Hz arrives from the left side of your head. Determine the phase difference between the sound in your left ear and the sound in your right ear given that an average ear-distance is 21.5 cm. Use v = 340 m/s for the speed of sound and be sure to express your answer in degrees.
A. About 55 degrees
B. About 5.5 degrees
C. About 0.1 degrees
D. About 360 degrees
E. About 10−2 degrees
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