The kinetic energy of a subatomic particle is 5.85x10^-25 J. Calculate the frequency of the particular wave.

We know that KE = ½ mv^2

  2KE = mv *v ,

we know that mv = h/ as per de Broglie’s equation ( =h/mv) then substituting the value we get,

   2KE = h/*v

we know that v = v, substituting the value we get,

  2KE = h/*v

  2KE = h v

   v = 2KE/h

  v = 2(5.85x10^-25 J)/6.626x10^-34

  v = 1.77x10^9 s^-1

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