What is...?

4.45 x 10^14 Hz in Joules and how did you calculate that?

Answer:
its the frequency of sound - Hz

and energy is expressed in joules.
and sound is a form of energy.

total answer:-
4.45x10^14 waves are flowing per second.(waves=carrier of energy)
E = h v

v = frequency in Hz
h = planck's constant, 6.626E-34 J s.

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