speed of sound in iron
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So iron has a density of about 7,800 kg/m 3 , while mercury has 13,600 kg/m 3 , but the speed of sound is1,450 m/s in mercury and 5,130 m/s in iron, so mercury has a higher density, but sound travels slower in it.M
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your ans:
speed of sound in air= 3 second/km
speed in iron=7.5g/m^3
speed of sound in air= 3 second/km
speed in iron=7.5g/m^3
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