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Author Question: How much work is needed to carry an electron from the positive terminal to the negative terminal of ... (Read 89 times)

danielfitts88

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on: Jul 29, 2018
How much work is needed to carry an electron from the positive terminal to the negative terminal of a 9.0-V battery. (e = 1.60  10-19 C , melectron = 9.11  10-31 kg)
 
  A) 1.6  10-19 J
  B) 17  10-19 J
  C) 14.4  10-19 J/C
  D) 9.0 J
  E) 14.4  10-19 J

Question 2

A hydrogen atom is excited to the n = 10 stated. It then decays to the n = 4 state by emitting a photon which is detected in a photographic plate. What is the frequency of the detected photon? The lowest level energy state of hydrogen is -13.6 eV.
 
  (h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J)
  A) 4.05  1014 Hz
  B) 1.73  1014 Hz
  C) 1.27  1014 Hz
  D) 0.865  1014 Hz
  E) 3.46  1014 Hz
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JaynaD87

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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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danielfitts88

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Reply 2 on: Jul 29, 2018
Excellent

nguyenhoanhat

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Reply 3 on: Yesterday
Wow, this really help

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