Answer to Question #254482 in Physics for Kpumpy

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?

Expert's answer

"(a)\\ \\ \\lambda=2\\cdot1.5=3\\ (cm)"

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

"n=90\/3=30."

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