People with very good pitch discrimination can very quickly determine what note they are listening to. The note on the musical scale called C₆ (two octaves above middle C) has a frequency of 1050 Hz. Some trained musicians can identify this note after hearing only 12 cycles of the wave.
How much time does this correspond to?

= 11ms

Explanation:

We have ,

1050Hz = 1050cycles / s

Divide the number of cycle by the number of cycle per seconds

we have,

no. of cycles / frequency  = Time

so the solution will be:

12 cycles / 1050 Hz  = 0.0114 seconds

Convert seconds into milliseconds by multiplying it by 1000 which is

0.0114 seconds  × 1000

= 11.43ms

≅ 11m/s

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