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Author Question: If an electron has the same de Broglie wavelength as the wavelength of a 390-nm photon in vacuum, ... (Read 199 times)

drink

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on: Jul 29, 2018
If an electron has the same de Broglie wavelength as the wavelength of a 390-nm photon in vacuum,
 
  what is the speed of the electron? (melectron = 9.11  10-31 kg, c = 3.0  108 m/s, h = 6.626  10-34 J  s)
  A) 2100 m/s B) 540 m/s C) 1900 m/s D) 1700m/s E) 1500 m/s

Question 2

What is the voltage drop across a 5.0- resistor if the current through it is 5.0 A?
 
  A) 100 V
  B) 25 V
  C) 4.0 V
  D) 1.0 V
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sylvia

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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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drink

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Reply #2 on: Jul 29, 2018
Thanks


sylvia

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Reply #3 on: Jul 29, 2018
Welcome :)


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