09-03-2017
Physics

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URGENT! Please help me with 7-9 and if possible can you please explain why :)!

URGENT Please help me with 79 and if possible can you please explain why class=

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Аноним Аноним

09-03-2017

7) c
opposite charges attract, equal charges repell
8) c
Followed from equation
9) d
Same reason as under 7

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