a moving electron has a de broglie wavelength of 7*10^-7. calculate its kinetic energy Share with your friends Share 1 Vartika Jain answered this Dear Student, We know that, λ=hmvor, v=hmλor, v=6.626×10-34 Js9.1×10-31 kg×7×10-7 m=1040.18 ms-1Now, K.E.=12mv2or, K.E.=12×(9.1×10-31 kg)(1040.18 ms-1)2or, K.E.=5×10-25 J 5 View Full Answer
