Answer: B. 263.16 hertz
Step-by-step explanation:
We are given the time period of a musical note T= 0.0038 seconds.
Since ,we know that the frequency is given by the reciprocal value of the time period.
Therefore, the frequency of the musical note middle is given by :-
[tex]\nu=\dfrac{1}{T}\\\\\Rightararow\nu=\dfrac{1}{0.0038}\\\\\Rightararow\nu=263.157894737\approx263.16\ Hz[/tex]
Hence, the frequency of the musical note middle C = 263.16 Hertz
