Physics, asked by denistravelp3ve2y, 1 year ago

Plz answer this ques fast its urgent...ques 15 part B.

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Answered by Richi121

a) To avoid echoing of voice
b) 1)E=1/2 mv2
E=hv
h=6.626. (10 - 34)
E=6.626(10-34)X256
V= c/wavelength
I HOPE NOW YOU WOULD BE ABLE 2CALCULATE IT FURTHER
THE SAME IS D METHOD FOR SECOND PART

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Answered by Anonymous

Answer:

this is your answer dear...

340m/s = 0.85m * fqHz

fq = 340/0.85 = 400HZ

m = meters

s= second

Hz = Hertz

wv = wavelength

fq = frequency....

please mitali rate my answer

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