Answer:

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Explanation:

1.343m/s

2. 28.5°C

\green{\huge{\tt{EXPLANATION:}}}EXPLANATION:

1. Use the formula Vs=331m/s+T(0.6m/s)Vs=331m/s+T(0.6m/s)

Given: \tt{T=20 \: Celsius}T=20Celsius

\implies Vs=331m/s+20(0.6m/s)⟹Vs=331m/s+20(0.6m/s)

\implies Vs=331m/s+12m/s⟹Vs=331m/s+12m/s

\implies Vs=343m/s⟹Vs=343m/s

\:

2. Use the formula C=\frac{V-331.3}{0.6}C=

0.6

V−331.3

Given: \tt{V=348.40m/s}V=348.40m/s

\implies V=\frac{348.40-331.3}{0.6}⟹V=

0.6

348.40−331.3

\implies V=\frac{17.1}{0.6}⟹V=

0.6

17.1

\implies V=28.5 \: Celsius⟹V=28.5Celsius