What is the de Broglie wavelength associated with electrons traveling at one hundredth of velocity of light?What is the velocity of a beam of electrons if they are to display a de Broglie wavelength of l nm?
【单选题】听力原文:M:Hi Jane.So glad to see you again. W:Likewise.I remember the last time we met was 4 months ago at Mickey's birthday party. How are you doing? Q:What do we know about the speakers? (17)
【单选题】听力原文:M: Hi, Jane. So glad to see you again. W: Likewise. I remember the last time we met was 5 months age at Mike' s birthday party. How are you doing? Q: What do we know about the speakers? (19)