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Home Q & A Board Science-Related Homework Help Physics
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Chery Chery
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7 years ago
Two tiny grains of sand having charges of 4.0 μC and -4.0 μC are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m. What is electric potential energy of the system of these grains assuming that at infinity the energy of the system is zero? (k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)
A) -36 mJ
B) 36 mJ
C) 0 J
D) -72 mJ
E) 72 mJ
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
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HotMathHotMath
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7 years ago
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Chery Author
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#2
7 years ago
Looked all over the internet for this, thank you for answering correctly
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#3
4 years ago
.
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#4
3 years ago
Thanks
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