Question #254482

wave covers 30cm in 5s, if the distance between a crest and its neighbouring trough is 1.5cm, (a) What is the wavelength? (b) How many circles can be formed in 15s?


1
Expert's answer
2021-10-21T16:34:13-0400

(a)  λ=2⋅1.5=3 (cm)(a)\ \ \lambda=2\cdot1.5=3\ (cm)


(b)  l=(30/5)⋅15=90 (cm)(b)\ \ l=(30/5)\cdot15=90\ (cm)


n=90/3=30.n=90/3=30.


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