waves

Related Questions

• A wave is represented by the equation $y=7\sin \left( 7\pi t-0.04\,x\pi +\frac{\pi }{3} \right)$ where $x$ is in metres and $t$ is in seconds. The speed of the wave is

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• A car sounding a horn of frequency 1000 Hz passes an observer. The ratio of frequencies of the horn noted by the observer before and after passing of the car is $11 : 9$. If the speed of sound is $v$, the speed of the car is

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• A plane wave is described by the equation $y=3\cos \left( \frac{x}{4}-10t-\frac{\pi }{2} \right)$. The maximum velocity of the particles of the medium due to this wave is

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• The source producing sound and an observer both are moving along the direction of propagation of sound waves. If the respective velocities of sound, source and an observer are v, ${{v}_{s}}$ and ${{v}_{o}}$, then the apparent frequency heard by the observer will be (n = frequency of sound)

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• A source and listener are both moving towards each other with speed $v/10$, where $v$ is the speed of sound. If the frequency of the note emitted by the source is $f$, the frequency heard by the listener would be nearly

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