The velocity of sound in air increases by about ______ for 1∘C in temperature. Fill in the blank.
0.61 m/s
0.1 m/s
10 m/s
15.4 m/s
A
10 m/s
B
0.1 m/s
C
0.61 m/s
D
15.4 m/s
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Solution
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The velocity vt of sound in air at a temperature toC is given ,
vt=v0+0.61t ,
where v0= velocity of sound in air at 0oC in m/s,
for t=10C ,
v1=v0+0.61 ,
it is clear that for 10C increase in temperature , velocity increases by 0.61 m/s.
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