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Calculate the frequency of paritcle wave...

Calculate the frequency of paritcle wave, when the kinetic energy of a sub-atomic particle is`3.79 xx 10^(-27) J`.
Hint `: KE = (1)/(2) mv^(2)`
`lambda = (h)/(mv) , lambda = ( v)/( v) `
`:. (v)/(v) = (h)/( mv), v= (mv^(2))/( h) = ( 2 xx ( 1)/(2) mv^(2))/( h) `

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`KE = 1/2 mv ^2`
` lamda = (h ) / ( mv ) , lamda = (v )/(c )`
` therefore (v ) /(v ) =(h )/(mv ) , v= ( mv^2)/(h ) = ( 2xx 1/2 ms^2)/( h )`
` v= 1.143 xx 10^(7) S^(-1) (Hz)`
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