Physics

Physics

Problem

Two waves move through the same medium. • Wave A: frequency = 300 Hz, amplitude = 2 cm • Wave B: frequency = 150 Hz, amplitude = 4 cm Which statement is correct about the energy transported by the two waves? a) Wave B transports four times as much energy because its amplitude is twice as large, and wave energy is proportional to A2.\text{Wave B transports four times as much energy because its amplitude is twice as large, and wave energy is proportional to }A^{2}. b) Wave A transports four times as much energy because its frequency is twice as large, and wave energy is proportional to f2.\text{Wave A transports four times as much energy because its frequency is twice as large, and wave energy is proportional to }f^{2}. c) Both waves transport the same energy because the product of frequency and amplitude is the same for each.\text{Both waves transport the same energy because the product of frequency and amplitude is the same for each.} d) Wave energy depends only on the properties of the medium, so both waves transport the same energy.\text{Wave energy depends only on the properties of the medium, so both waves transport the same energy.}

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