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Sagot :
Answer:
The answer is "[tex]-21.84^{\circ} \ C[/tex]"
Explanation:
Calculating the speed of sound in the air:
[tex]v=\frac{2d}{t}=\frac{2\cdot 70\ m}{0.44\ s}=318.1\ \frac{m}{s}[/tex]
Finding the temperature in the air from the formula:
[tex]v=331.3+0.606\ T[/tex]
[tex]T=\frac{v-331.3}{0.606}[/tex]
[tex]=\frac{318.1\ \frac{m}{s}-331.3\ \frac{m}{s}}{0.606\ ^{\circ}\ C^{-1}} \\\\= \frac{-13.2 \ \frac{m}{s}}{0.606^{\circ}\ C^{-1}} \\\\ =-21.84^{\circ} \ C[/tex]
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