(a) What is the speed of sound in a medium where a 142-kHz frequency produces a

Question

(a) What is the speed of sound in a medium where a 142-kHz frequency produces a 2.683-cm wavelength?

m/s

(b) Which substance in the table below is this likely to be?

Speed of Sound in Various Media Vw(m/s) Medium Gases at 0°C Air Carbon dioxide 259 Oxygen Helium Hydrogen Liquids at 20°C Ethanol Mercury Water, fresh Sea water Human tissue Solids (longitudinal or bulk) Vulcanized rubber 54 Polyethylene 920 Marble Glass, Pyrex Lead Aluminum Steel 331 316 965 1290 1160 1450 1480 1540 1540 3810 5640 1960 5120 5960

Explanation / Answer

According to the question we need to use the below mentioned formula to find the speed of sound.

v = f = (2.683 *10-2 m)*142 * 10 ^ 3 /s = 3.80986*103 m/s or 3809.86 m/s =====ANSWER)

that's marble ( 3810 ) ======== Marble ============ANSWER)

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