The government received a number of comments both for and against driver-selectable low-speed EV sounds. Vehicles capable of operating silently are required by law to emit sounds at speeds up to 19 ...
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second ...
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