Do question 3and 6 in a page

Dear student,
3. Given, λ = 100 m
v = 20 m/s
Since, v = f λ
f = v/λ = 20/100 = 0.2 hertz

6. The speed of the sound, distance traveled and the time taken relationship is given as follows.
Speed of sound=Time taken / Distance traveled

T i m e = \frac{d i s \tan c e}{v e l o c i t y} t i m e = \frac{1650}{330} = 5 s s o B w i l l h e a r t h e s o u n d a f t e r 5 s e c o n d s .

Regards

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