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What is Sound

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what is sound

What is Sound

A sound is made of the energy produced by vibrations. The vibrations travel through the air creates the pressure on the air, which is known as the sound wave.

The unit of sound measurement is known as dB, decibels. The SI unit of sound pressure is considered as Pa, the pascal.

What is the Speed of Sound

The speed of sound, in general, is considered as 344 m/s (i.e. 1238 km/h or 770 mph) but it is not accurate in all circumstances, it depends on the weather, humidity, temperature, and other factors.

Speed of Sound in Air

The speed of sound at 0 °C (32 °F), is 331.2 m/s (i.e. 1192 km/h or 741 mph) and at 20 °C (68 °F), the speed of sound is 343 m/s (i.e. 1235 km/h or 767 mph).

Speed of Sound in Water

Sound travels much faster in water, at 0 °C (32 °F) the speed of sound is 1403 m/s (i.e. 5050.8 km/h or 3138.42 mph) and at 20 °C (68 °F), the speed of sound is 1481 m/s (i.e. 5331.6 km/h or 3312.9 mph).

Speed of Sound in Metals and Solid

Sound travels much faster in solids, faster than air and water, speed of sound in steel is 5790 m/s (i.e. 20844 km/h or 12951.8 mph), in wood the sound travels at 3960 m/s (i.e. 14256 km/h or 8858.26 mph), in gold the speed of sound is 3240 m/s (i.e. 11664 km/h or 7247.67 mph), the speed of sound in iron is 5,130 m/s (i.e. 18468 km/h or 11475.48 mph).


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