waves

Related Questions

• The apparent frequency of a note, when a listener moves towards a stationary source, with velocity of 40 m/s is 200 Hz. When he moves away from the same source with the same speed, the apparent frequency of the same note is 160 Hz. The velocity of sound in air is (in m/s)

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• If the length of a closed organ pipe is 1.5 m and velocity of sound is 330 m/s, then the frequency for the second note is

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• The equation $\vec{\varphi \,}(x,\,t)=\vec{j\,}\sin \,\left( \frac{2\pi }{\lambda }v\,t \right)\cos \,\left( \frac{2\pi }{\lambda }x \right)$ represents

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• The superposing waves are represented by the following equations : ${{y}_{1}}=5\sin 2\pi (10\,t-0.1x)$, ${{y}_{2}}=10\sin 2\pi (20\,t-0.2x)$. Ratio of intensities $\frac{{{I}_{\max }}}{{{I}_{\min }}}$ will be

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• Maximum number of beats frequency heard by a human being is

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