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A girl rubs a balloon against her hair. The balloon then has a negative charge. The MOST LIKELY explanation is that the girl's hair.
A. Was uncharged before but now has a positive charge.
B. Was uncharged before but now has a negative charge.
C. Had a positive charge before but now is uncharged.
D. Had a negative charge before but now is uncharged.
If the balloon got a negative charge from her hair then the girl should have a positive charge so that Most likely means A or C would be the correct answer.
Answer: It's A. When you rub a balloon on your head, electrons move from the atoms and molecules in your hair onto the balloon. Electrons have a negative charge, so the balloon becomes negatively charged, and your hair is left with a positive charge.
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