A wave is represented by the equation y = A (10 x + 15 t + 3 ) where is in meters and…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A wave is represented by the equation y=Asin⁡(10πx+15πt+π3)y = A \sin (10 \pi x + 15 \pi t + \frac{\pi}{3}) where xx is in meters and tt is in seconds. The expression represents : (1) a wave travelling in the positive xx -direction with a velocity 1.51.5 m/s. (2) a wave traveling in the negative xx -direction with a velocity 1.51.5 m/s. (3) a wave travelling in the negative xx -direction having a wavelength 0.20.2 m. (4) a wave travelling in the positive xx -direction having a wavelength 0.20.2 m.

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