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Author Question: An electron is moving with the speed of 1780 m/s. What is its de Broglie wavelength? (melectron = ... (Read 116 times)

deesands

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on: Jul 29, 2018
An electron is moving with the speed of 1780 m/s.
 
  What is its de Broglie wavelength? (melectron = 9.11  10-31 kg, h = 6.626  10-34 J  s)
  A) 409 nm
  B) 302 nm
  C) 205 nm
  D) 420 nm
  E) 502 nm

Question 2

A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u? (1 u = 931.5 MeV/c2)
 
  A) 0.0156 MeV
  B) 0.156 MeV
  C) 1.56 MeV
  D) 15.6 MeV
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juwms

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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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deesands

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Reply 2 on: Jul 29, 2018
:D TYSM

bdobbins

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Reply 3 on: Yesterday
Excellent

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