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प्रश्न
Name two sound absorbing materials (or objects) which can make our big room less echoey.
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उत्तर
Curtains and carpets are two sound-absorbing materials that can make big rooms less echoey.
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संबंधित प्रश्न
A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
1) Calculate the speed with which this sound travels
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State two factors on which the speed of a wave travelling in a medium depends.
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