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The fall 2004 physics 7b midterm 2 exam for university students. The exam covers various topics in physics, including electrostatics, electric fields, capacitance, and projectile motion. Students are required to solve problems related to these topics and express their answers in terms of given quantities.
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Physics 7b Fall 2004 Midterm 2 Ramesh
All algebraic answers should be expressed in terms of the given quantities. Box your final answer and show all your work. All problems are worth the same number of points.
(c) ( independent of parts a and b ) A parallel plate capacitor has plates with area A and separation d. A battery charges the plates to a potential difference V 0. The battery is then disconnected and a dielectric slab of area A , thickness d and dielectric constant is introduced. Calculate the stored energy both before and after the slab is introduced. Explain how total energy is conserved in this case.