Two train whistles, A and B, each have a frequency of 392 Hz. A is stationary and B is moving toward the right (away from A) at a speed of 35.0 m/s. A listener is between the two whistles and is moving toward the right with a speed of 15.0m/s. (See Figure given). No wind is blowing. U = 35.0 m/s UL - 15.0 m/s 1. What is the frequency from A as heard by the listener? 2. What is the frequency from B as heard by the listener? 3. What is the beat frequency detected by the listener?

Two train whistles, A and B, each have a frequency of 392 Hz. A is stationary and B is moving toward the right (away from A) at a speed of 35.0 m/s. A listener is between the two whistles and is moving toward the right with a speed of 15.0m/s. (See Figure given). No wind is blowing. U = 35.0 m/s UL - 15.0 m/s 1. What is the frequency from A as heard by the listener? 2. What is the frequency from B as heard by the listener? 3. What is the beat frequency detected by the listener?