問題詳情

57. The rest mass of an electron is mo. What is the kinetic energy of an electron with the speed of 0.80c? (The constant c is thespeed of light in vacuum.)
(A)


(B)


(C)


(D)


(E)

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)