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Try to identify the following charging processes as charging by friction or charging by induction

CHARGING PROCESSES:
1.)A rubber balloon is rubbed with an animal fur.
2.)a positively charged balloon is brought near to a neutral conducting pop can.
3.)rub a glass with a piece of silk
4.)the negatively charged balloon
5.)a student rub a beach ball against the lab station top.the beach ball becomes negatively charged.
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