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Author Question: When it is struck by 240-nm photons, a material having a work function of 2.60 eV emits electrons. ... (Read 46 times)

gbarreiro

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on: Jul 29, 2018
When it is struck by 240-nm photons, a material having a work function of 2.60 eV emits electrons.
 
  What is the maximum kinetic energy of the emitted electrons? (c = 3.00  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J)
  A) 2.00 eV B) 2.58 eV C) 5.18 eV D) 4.21 eV

Question 2

The binding energy of the hydrogen atom in its ground state is -13.6 eV. What is the energy when it is in the n = 5 state?
 
  A) 0.544 eV B) 2.72 eV C) -2.72 eV D) -0.544 eV E) -68 eV
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firehawk60

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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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gbarreiro

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Reply 2 on: Jul 29, 2018
Excellent

bdobbins

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Reply 3 on: Yesterday
Gracias!

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