Question

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6. The vocality of sound at 20°C is approximately
:
(a) 304 m/sec (b) 340 m/sec sted. (C) 430 m/sec. (d) 3400 m/sec
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Answer 1

Answer:

At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 s. It depends strongly on temperature as well as the medium through which a sound wave is propagating.

Answer 2

Answer:

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