A series of ocean waves, each 5.0 m horizontally from one crest to the next cres

Question

A series of ocean waves, each 5.0 m horizontally from one crest to the next crest, move past an observer at a rate of 2 waves per second. What is the velocity of these waves? 1. a) 2.5 m/s b) 5.0m/sc) 8.0 m/s d) 10.0 m/s e)20 m/s Ifthe highest The highest sound frequency a child can hear is 20 kHz with a wavelength of 1.7 cm. frequency an adult can hear is 15 kHz, approximately what is the wavelength of this sound wave? 2. a. 1.6 cm b. 2.3 cmc. 2.6 cm d34.0 cm 3. The diagram below shows two pulses on a string travelling toward each other. Which of the following diagrams best shows the shape of the string after the pulses have passed through each other? A. B. C. D.

Explanation / Answer

here,

1)

distance between each crest , s = 5 m

so , the wavelength ,lamda = 5 m

the velocity of wave , v = lamda * s

v = 5 * 2 m/s

v = 10 m/s

the velocity of these waves is d) 10 m/s

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