58. What is the de Broglie wavelength of an electron accelerated from rest through a potential difference of 50.0 V?
(A) 0.100 nm
(B) 0.139 nm
(C) 0.174 nm
(D) 0.834 nm
(E) none of the above
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統計: 尚無統計資料
統計: 尚無統計資料