The velocity of sound at 20°C is approximately
A. 3400 m/sec.
B. 340 m/sec.
C. 430 m/sec
D. 304 m/sec.
Answer:B
The velocity of sound at 20°C is approximately
A. 3400 m/sec. B. 340 m/sec. C. 430 m/sec D. 304 m/sec.