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Author Question: A nonrelativistic electron is accelerated from rest through a potential difference. After ... (Read 68 times)

rmenurse

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on: Jul 29, 2018
A nonrelativistic electron is accelerated from rest through a potential difference.
 
  After acceleration the electron has a de Broglie wavelength of 880 nm. What is the potential difference though which this electron was accelerated? (h = 6.626  10-34 J  s, e = - 1.60  10-19 C, mel = 9.11  10-31 kg)
  A) 2.5 V B) 2.2 V C) 1.9 V D) 1.7 V

Question 2

An electron is released from rest at a distance of 9.00 cm from a fixed proton.
 
  How fast will the electron be moving when it is 3.00 cm from the proton? (k = 1/40 = 8.99  109 N  m2/C2, e = 1.60  10-19 C, melectron = 9.11  10-31 kg, mproton = 1.67  10-27 kg)
  A) 75.0 m/s
  B) 106 m/s
  C) 130 m/s
  D) 1.06  103 m/s
  E) 4.64  105 m/s
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zhanghao

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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rmenurse

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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