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Author Question: A square is 1.0 m on a side. Point charges of +4.0 C are placed in two diagonally opposite corners. ... (Read 93 times)

Starlight

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on: Jul 29, 2018
A square is 1.0 m on a side. Point charges of +4.0 C are placed in two diagonally opposite corners.
 
  In the other two corners are placed charges of +3.0 C and -3.0 C. What is the potential (relative to infinity) at the midpoint of the square? (k = 1/40 = 9.0  109 N  m2/C2 )
  A) 1.0  106 V B) infinite C) 1.0  105 V D) 0 V E) 1.0  104 V

Question 2

An electric current through a tungsten filament maintains its temperature at 2800 K. Assume the tungsten filament behaves as an ideal radiator at that temperature.
 
  If the radiating area of the filament is 2.0  10-6 m2, at what rate does it radiate energy? ( = 5.670  10-8 W/m2  K4, Wien displacement law constant is 2.90  10-3 m  K)
  A) 11.5 W B) 7.0 W C) 8.5 W D) 5.5 W E) 10 W
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olivia_paige29

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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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Starlight

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Reply 2 on: Jul 29, 2018
Gracias!

Liamb2179

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Reply 3 on: Yesterday
Wow, this really help

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