The speed of sound at sea level at 20°C is 343 metres per second. Write the prime factorisation of 343.
4. Think and answer.
WITH SOLUTION
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Answered by
1
Answer: At 20 °C , 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 4.7s.
Answered by
0
Answer:
=7*7*7*1
Explanation:
343=7*49
7*7*7
7*7*7*1
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