For the next two items, consider four point charges placed at the corners of a square with side a as shown. 20 3Q 13. TreeQ. What is the electric potential energy at the charge 3Q due to all the other charges? 12KQ² A. a a kQ² В. (-6 – 3/2) a -2Q -4Q kQ² С. (-2 – 7/2) kQ² D. (-4 – 14/2) 14. In the box. Assuming all charges start from infinity, how much potential energy is needed to assemble this configuration of charges? 12KQ² kQ² (-2 – 7/2) А. С. a kQ² В. (-6 – 3/2) kQ² D. (-4 – 14/2) a a

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Chapter1: Units, Trigonometry. And Vectors
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For the next two items, consider four point charges placed at
the corners of a square with side a as shown.
20
3Q
13. TreeQ. What is the electric potential energy at the charge
3Q due to all the other charges?
12KQ²
А.
a
a
kQ?
В.
(-6 – 3/2)
-20
-4Q
a
kQ² (-2 – 7/2)
С.
a
kQ²
D.
(-4 – 14/2)
a
14. In the box. Assuming all charges start from infinity, how much potential energy is needed
to assemble this configuration of charges?
12KQ²
kQ²
С.
-(-2 – 7/2)
А.
a
kQ²
В.
-(-6 – 3/2)
kQ²
D.
-(-4 – 14/2)
a
a
Transcribed Image Text:For the next two items, consider four point charges placed at the corners of a square with side a as shown. 20 3Q 13. TreeQ. What is the electric potential energy at the charge 3Q due to all the other charges? 12KQ² А. a a kQ? В. (-6 – 3/2) -20 -4Q a kQ² (-2 – 7/2) С. a kQ² D. (-4 – 14/2) a 14. In the box. Assuming all charges start from infinity, how much potential energy is needed to assemble this configuration of charges? 12KQ² kQ² С. -(-2 – 7/2) А. a kQ² В. -(-6 – 3/2) kQ² D. -(-4 – 14/2) a a
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