Social Studies, 28.07.2019 09:00 gunnatvinson
What is the speed of sound in air when the temperature is 20°c? 319 m/s 331 m/s 343 m/s 219 m/s
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What is the speed of sound in air when the temperature is 20°c? 319 m/s 331 m/s 343 m/s 219 m/s...
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