Explain what is a positron?
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If the distance separating two charges is doubled, the force between them decreases by what multiple factor?
why we use Transistor?
The magnitude of electrostatic force between two identical positive ions that are separated by a distance of 5.0 x 10– 10 m is 3.7 x 10–9 N. (a) What is the charge of each ion? (b) How many electrons are “missing” from each ion?
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we know the speed of light...... then what is the speed of darkness?????????????
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explain Tides
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assuming g = 9.8 m/sec2, what is the weight on earth, in newtons, of a 60 kilogram person?
Define Umbra?