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Author Question: A 400-W computer (including the monitor) is turned on for 8.0 hours per day. If electricity costs 10 ... (Read 30 times)

Pineappleeh

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on: Jul 29, 2018
A 400-W computer (including the monitor) is turned on for 8.0 hours per day. If electricity costs 10 per kWh, how much does it cost to run the computer annually for a typical 365-day year?
 
  A) 1200 B) 15 C) 120 D) 17 E) 150

Question 2

The spacing of the atoms of a crystal is 159 pm. A monoenergetic beam of neutrons directed normally at the surface of the crystal undergoes first order diffraction at an angle of 58 from the normal.
 
  What is the energy of each of the neutrons? (mneutron = 1.675  10-27 kg, 1 eV = 1.6  10-19 J, h = 6.626  10-34 J  s) A) 0.045 eV
  B) 0.039 eV
  C) 0.050 eV
  D) 0.056 eV
  E) 0.061 eV
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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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Pineappleeh

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Reply 2 on: Jul 29, 2018
Excellent

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Reply 3 on: Yesterday
Gracias!

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