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The best conductors of electricity include:
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
When a glass rod is rubbed with a silk cloth it loses electrons. The glass rod will become
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
Fossil fuels, such as oil and coal, formed over
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
Which of the following is a good insulator for electric wires?
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
Which force causes a ball rolling down the street to slow down?
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
A neutral object will have
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
Which atomic particle has a negative charge?
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
The amount of work done by a machine is never larger than the work put into a machine. Some of the input work is lost because of:
Electron
Rubber
two hundred million years
equal amounts of positive and negative charges
aluminum, copper, gold
positively charged
Friction
friction
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