Question

Help with question number 2 please

PRACTICE EXERCISES A nular wave pulses are traveling in opposite directions along a string. At -0, the two pulses are as shown in the meters, and that the pulse speeds are 10m/s) 1) Tw Sketch the wave functions for t 1, 2, and 3 figure. (As s sume the unit on the x-axis is (Hint: Just use the principle of superposition.) s qu 10 10 t- 0 15 45 50 2) Sound source A is located at pt. (x,y) (0,0) and sound source B įs placed at pt (xy transmitting identical sinusoidal waves that start out in-phase radiating "coherently" if they have identical frequencies and have a fixed phase relationship). An observer standing 40m, O) notes that as she moves in either direction along the y-axis the sound intensity diminishes (in other intensity at her starting position is a maximum-i.e., the two waves are constructively interfering.) Use compute the frequency of the sound. Note: there is more than one possible frequency; just find the lowest and the of these frequencies? Answer: 4780 Hz, 9560 Hz (0, 2.4m). Assume the two sources are with one another. (In general, we say two wave sources are at pt. (x.y) Hint: First draw a clear picture of the situation, and the n apply the criterion for constructive interference when two waves travel different distances (you'll also need to remember that fv and v for sound is 344m/s).

Answer 1

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