If frequency is 2,000 Hz and wavelength is 0.5 m, what is the speed of sound?

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Multiple Choice

If frequency is 2,000 Hz and wavelength is 0.5 m, what is the speed of sound?

Explanation:
Speed is found by multiplying frequency by wavelength, because v = f × λ. With f = 2000 Hz and λ = 0.5 m, the speed is 2000 × 0.5 = 1000 m/s. Units make sense here too: hertz is cycles per second, so Hz × meters gives meters per second. You can also check by period: T = 1/f = 1/2000 = 0.0005 s; in that time the wave travels 0.5 m, so speed = 0.5 / 0.0005 = 1000 m/s.

Speed is found by multiplying frequency by wavelength, because v = f × λ. With f = 2000 Hz and λ = 0.5 m, the speed is 2000 × 0.5 = 1000 m/s. Units make sense here too: hertz is cycles per second, so Hz × meters gives meters per second. You can also check by period: T = 1/f = 1/2000 = 0.0005 s; in that time the wave travels 0.5 m, so speed = 0.5 / 0.0005 = 1000 m/s.

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