用丝绸摩擦过的玻璃棒带的电荷是叫?

电学期中测试

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Computers
•
KG
•
Hard
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23 questions
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1.
FLASHCARD QUESTION
Front
Back
正电荷
2.
FLASHCARD QUESTION
Front
用毛制品摩擦过的塑料棒子带的电荷是叫?
Back
负电荷
3.
FLASHCARD QUESTION
Front
为什么用塑料梳子梳头,头发会随着梳子飘起来。是因为___现象
Back
静电
4.
FLASHCARD QUESTION
Front
失去电子的物体因为缺少电子带
Back
正电
5.
FLASHCARD QUESTION
Front
得到电子的物体因为有多余的电子带
Back
负电
6.
FLASHCARD QUESTION
Front
摩擦起电的原理是?
Back
是电荷从一个物体转移到另一个物体,使正负电荷分开
7.
FLASHCARD QUESTION
Front
在地球表面,物体由于收到重力并处在一定高度时所具有的能量是____?
Back
重力势能
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