Please help me with the following questions.

1.

AEd ? 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 f = Hz 35.0 m/S. A listener is between the two whistles and is moving toward the right with a speed of 15.0 m/s (Figure 1). No wind is blowing. Take the speed of sound to be 344 m/s. Submit Request Answer For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Doppler effect ili: a moving listener. Part B What is the frequency from B as heard by the listener? Express your answer in hertz. JA AEd ? f = Hz Submit Request Answer Figure