Answer:
83.3 kHz
Explanation:
The frequency of a waveform is equal to the reciprocal of its period:
where
f is the frequency
T is the period
In this problem, we have
so, the frequency of the waveform is
And by converting into kiloHertz,
The answer is D. Sublimation, because it has change of state it has a volume of a substances it increase the most.
Helium atom, in other words, it consistis of a particle having four protons and two neutrons.