Question: A lightning flash is seen in the sky and 8.2 s later the boom of the thunder is heard. The temperature of the air is

A lightning flash is seen in the sky and 8.2 s later the boom of the thunder is heard. The temperature of the air is 12°C.
(a) What is the speed of sound at that temperature? [Light is an electromagnetic wave that travels at a speed of 3.00 × 108 m/s.]
(b) How far away is the lightning strike?

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