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A wave is represented by :y (x, t) = (5 cm) sin 1(20 s ) t− 1(15 cm ) x− + Determine the velocity of the wave.

Question

A wave is represented by :

y(x,t)=(5 cm)sin(20 s1t[115 cmx]) y(x, t) = (5 \text{ cm}) \sin \left( 20 \text{ s}^{-1} t - \left[ \frac{1}{15 \text{ cm}} x \right] \right) Determine the velocity of the wave.

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Solution

To determine the velocity of the wave, we need to find the coefficient of the x term in the equation. In this case, the coefficient is -1(15 cm).

The velocity of a wave is given by the formula v = λ * f, where v is the velocity, λ (lambda) is the wavelength, and f is the frequency.

In this equation, the wavelength is equal to the coefficient of the x term, which is -1(15 cm).

To find the frequency, we need to look at the coefficient of the t term, which is 1(20 s).

Now we can calculate the velocity of the wave.

v = λ * f v = -1(15 cm) * 1(20 s) v = -300 cm/s

Therefore, the velocity of the wave is -300 cm/s.

This problem has been solved

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