Physics, 18.01.2020 03:31 sonyalehardez
Common transparent tape can becomes charged when pulled from a dispenser. if two identical pieces of tape are pulled from two freshly loaded tape dispensers so that they have the same charge and one piece is placed above another, the repulsive force can be great enough to support the top piece’s weight. calculate the magnitude of the charge on each piece of tape if electrostatic force is great enough to support the weight of a 11.3 mg piece of tape a distance 1.00 cm above the other. for this problem, treat the each piece of tape as a point charge (this is only an approximation) [be sure to watch the video at the beginning of this chapter.]
Answers: 2
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Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
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If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?
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What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical
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Common transparent tape can becomes charged when pulled from a dispenser. if two identical pieces of...
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