P22_048.PDF

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Chapter 22 - 22.48
48. When sphere C touches sphere A , they divide up their total charge ( Q/ 2plus Q ) equally between them.
Thus, sphere A now has charge 3 Q/ 4, and the magnitude ofthe force ofattraction between A and B
becomes
3 4 4
d 2
F = k
=4 . 68
×
10 − 19 N .

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