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Author Question: A metal surface has a work function of 2.50 eV. What is the longest wavelength of light that will ... (Read 300 times)

debasdf

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on: Jul 29, 2018
A metal surface has a work function of 2.50 eV.
 
  What is the longest wavelength of light that will eject electrons from the surface of this metal? (1 eV = 1.60  10-19 J, c = 3.00  108 m/s, h = 6.626  10-34 J  s)

Question 2

If you want to store 2.0 mJ of energy in a 10-F capacitor, how much potential do you need to put across it?
 
  A) 5.0 V
  B) 10 V
  C) 15 V
  D) 20 V
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CAPTAINAMERICA

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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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debasdf

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


CAPTAINAMERICA

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


onetimeuse

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Reply #4 on: Sep 18, 2022
thank you


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