Question 1
If y = 0.02 sin (30x− 400t) (SI units), the wavelength of the wave is
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π/15 m
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15/π m
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60π m
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4.2 m
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30 m
Question 2
Ocean waves with a wavelength of 120 m are coming in at a rate of 8 per minute. What is their speed?
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8.0 m/s
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16 m/s
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24 m/s
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30 m/s
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4.0 m/s