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Chapter 19: Q46PE (page 698)
What charge is stored in a capacitor when 120Vis applied to it?
The amount of charge stored in a capacitor when 120V is applied to it, is .
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Fusion probability is greatly enhanced when appropriate nuclei are brought close together, but mutual Coulomb repulsion must be overcome. This can be done using the kinetic energy of high-temperature gas ions or by accelerating the nuclei toward one another.
(a) Calculate the potential energy of two singly charged nuclei separated by 1.00 x 10-12m by finding the voltage of one at that distance and multiplying by the charge of the other.
(b) At what temperature will atoms of a gas have an average kinetic energy equal to this needed electrical potential energy?
What is the potential from a proton (the average distance between the proton and electron in a hydrogen atom)?
What voltage must be applied to an \({\bf{8}}{\bf{.00 nF}}\) capacitor to store \({\bf{0}}{\bf{.160}}\;{\bf{mC}}\) of charge?
Will a negative charge, initially at rest, move toward higher or lower potential? Explain why.
A prankster applies 450V to an capacitor and then tosses it to an unsuspecting victim. The victim's finger is burned by the discharge of the capacitor through 0.200 g of flesh. What is the temperature increase of the flesh? Is it reasonable to assume no phase change?
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