What is the speed of a particle of mass 10-27kg whose wavelength is 10-8m.[h = 6.63 x 10-34Js]
Answer Details
Energy of a particle is given by E = hf = hV/λ (since V = fxλ) But in terms of mass M, E = ∆MV2 ∴ ∆MV2 = hV/λ ∆MV = h/λ ∴ V = h/λ∆M V = 6.63 x 10-34/(10-27 x 10-8) V = 6.63 x 10-34/10-35 V = 6.63 x 10-34+35 V = 6.63 x 10 V = 66.3ms-1