Which speed is at the sound barrier plz tell meh will mark brainless
2 answers:
Answer:
<em>343 metres per second
</em>
<em>In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).</em>
<em></em>
Answer:
your answer is 343 mps. THIS IS 100% THE CORRECT ANSWER!
hope I helped! :)
Step-by-step explanation:
I got it correct on my quiz
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