Re: [問題] 有幾個問題請教一下
對不起喔 這裡就回答你的問題
※ 引述《c8c8c8 (呵呵)》之銘言:
: AQ-1. 電子經最大加速電壓 3000V 加速後,轟擊靶金屬而發出X 光,求所能
: 發出的最短波長為何?
cut-off frequency
: AQ-3. 在氫原子光譜中(a)Lyman 系列中,能量最低的光子其能量為何?波長
: 為何?能量最高的光子其能量為何?波長為何?
E = hf = hc/λ , c = 3E+8
: (b)Balmer 系列中,能量最低的光子其能量為何?波長為何?能量最高的光子其
: 能量為何?波長為何?應將此光譜線歸屬於可見光還是紫外線波段?
E = hf = hc/λ , c = 3E+8
: AQ-4. 物質波波長:原為靜止的電子經最大加速電壓 3000V 加速後,其物質
: 波波長為何?原為靜止的質子經最大加速電壓3000V 加速後,其物質波波長為
: 何?
在古典及非相對論下
E = 1/2 mv^2 = p^2 /2m , p = h/λ
: AQ-5. 利用測不准原理來估計在寬為 1nm 的一維無限深位能井中,電子最小動能為何?
ΔxΔp >= h-bar/2 , E = p^2 /2m
constant : h = 6.626E-34 J-s , h-bar = h/2π
我應該相當切進重點式的回答你了
不懂我也沒辦法
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I have finished over a thousand assignments.
Unknown to pass. Nor known to fail.
Have withstood pain to take many midterms.
Yet, those hands will never write anything.
So as I pray, Unlimited homeworks.
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※ 編輯: nightkid 來自: 140.115.221.162 (03/11 23:32)
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