LUSCutnell, Physics, 10e COLLEGE PHYSICS PY 2333/ 2323) y & Practice Gradebook O

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LUSCutnell, Physics, 10e COLLEGE PHYSICS PY 2333/ 2323) y & Practice Gradebook ORION Downloadable eTextbook DRCES Chapter 17, Problens 20 G0 are both out of tuse. On a day nhn the speed of sound ns 344 mv/s, pane A prouduces a wivelength of o.762 mu while piane B producnes a wavelength of 0.776 m. How much time separates suocessive bears? Nureber em 33 em 42 the number of sondcart dgts is set to 3; the tolerance +/-9% Study By accessing this Question Asustance, you will learn whle you eam ponts based on the Pot Potential Polcy set by your instructor Question Attempts, 0of 3 used sanro"L"," answer this uestion cometly in yu Show all

Explanation / Answer

Q1. Two pianos...

Soln.
lets say that the frequencies are f1 and f2.

So, f1 = v/L1
or, f1 = 344/0.762
so, f1 = 451.44 Hz

and f2 = v/L2
or, f2 = 344/0.776
so, f2 = 443.29 Hz

Now, the number of beats per second, N = f1 - f2 = 451.44-443.29
so, N = 8.15 per second

So the time between successive beats t = 1/N
so, t = 1/8.15
so, t = 0.123 second (ans.)

Pls post other questions separately.

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