Two point charges attract each other with an electric force of magnitude F. If one charge is reduced to one-third its original value and the distance between the charges is doubled, what is the resulting magnitude of the electric force between them?
1.1/12 F
2.1/3 F
3.1/6 F
4.3/4 F
5.3/2 F
1
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Specific Heat: A glass beaker of unknown mass contains 74.0 ml of water. The system absorbs 2000.0 cal of heat and the temperature rises 20.0°C as a result. What is the mass of the beaker? The specific heat of glass is 0.18 cal/g ? °C, and that of water is 1.0 cal/g ? C°.
A. 140 g B. 560 g C. 540 g D. 270,000 g
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A glacier grows and shrinks with the seasons. When a glacier is growing, we say it is
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A) initial momentum. B) maximum height. C) time of travel. D) acceleration. E) none of the above