Answer:
1.(352 m/s)What is the speed of sound at -20°C? (319 m/s)A 320 Hz tuning fork will produce a wave of what wavelength in air at 22°C? (1.1 m)We see a bolt of lightning and 4 seconds later we hear the thunder.
2.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.
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Speed of sound.
Explanation:
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