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Author Question: The rate of energy flow per unit area of an electromagnetic wave has an average value of 0.695 W/m2. ... (Read 30 times)

anshika

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on: Jul 29, 2018
The rate of energy flow per unit area of an electromagnetic wave has an average value of 0.695 W/m2. The wave is incident at right angles upon a rectangular area measuring 1.5 m by 2.0 m.
 
  How much total energy falls upon this rectangle each minute? (0 = 8.85  10-12 C2/N  m2, 0 = 4  10-7 T  m/A, c = 3.0  108 m/s)
  A) 130 J
  B) 160 J
  C) 190 J
  D) 220 J
  E) 250 J

Question 2

If a - particle at rest decays into a neutron and a - , what is the total kinetic energy of the decay products? The masses of -, neutron, and - are 1197 MeV/c2, 940 MeV/c2, and 140 MeV/c2, respectively.
 
  What will be an ideal response?
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wergv

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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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anshika

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

shailee

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Reply 3 on: Yesterday
Wow, this really help

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