1) A water wave has frequency f = 5 Hz and wavelength y = 0.8 m. What is its speed? a) 4.0 m/s b) 0.16 m/s c) 6.25 m/s d) 1.6 m/s 2) A sound wave travels at v = 340 m/s with wavelength y = 0.85 m. What is its frequency? a) 0.0025 Hz b) 400 Hz c) 289 Hz d) 0.85 Hz 3) For a wave on a string, frequency f = 12 Hz, and wavelength y = 0.25 m. Find its velocity. a) 12.25 m/s b) 48 m/s c) 0.021 m/s d) 3.0 m/s 4) A wave has speed v = 8 m/s and frequency f = 2 Hz. Its wavelength is.. a) 0.25 m b) 16 m c) 4 m d) 6 m 5) From the displacement–distance graph below, the distance between two consecutive crests is 2.4 m. If f = 3 Hz, what is v?  a) 7.2 m/s b) 1.25 m/s c) 0.8 m/s d) 0.72 m/s 6) For a wave with v = 30 m/s, the displacement–time graph shows T = 0.15 s. Find wave length y. a) 4.5 m b) 0.2 m c) 2.0 m d) 0.005 m 7) A displacement–distance graph shows points 2 m apart that are in phase. If v = 10 m/s, what is f? a) 0.2 Hz b) 5 Hz c) 20 Hz d) 10 Hz 8) A rope wave has y = 0.75 m. The displacement–time graph shows T = 0.5 s. Find v. a) 1.5 m/s b) 0.375 m/s c) 3.0 m/s d) 0.75 m/s 9) A wave travels 18 m in 3 s while f = 6 Hz. What is y? a) 1.5 m b) 1.0 m c) 0.5 m d) 3.0 m 10) In air, a sound of frequency 850 Hz has wavelength 0.40 m in a tube. What is the approximate wave speed? a) 212.5 m/s b) 0.47 m/s c) 850 m/s d) 340 m/s

Apply the wave equation in solving wave motion problems

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