Eðlisfræði 2, vor 2007

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http://session.masteringphysics.com/myct 04/19/<strong>2007</strong> 05:02 PM Hint not displayed Hint J.2 Graph of Hint J.3 Conservation of energy Hint not displayed Hint not displayed ANSWER: 0.0 ms 2.0 ms 4.0 ms 6.0 ms 8.0 ms Part K At what time do the capacitor and the inductor possess the same amount of energy for the first time? Hint K.1 Hint K.2 Hint K.3 Use conservation of energy Energy and charge A useful trigonometric result Hint not displayed Hint not displayed Hint not displayed Express your answer in milliseconds. ANSWER: = 1.0 Part L What is the direction of the current in the circuit 22.0 milliseconds after the switch is closed? Hint L.1 Hint L.2 Use the periodic nature of the process Graph of Hint not displayed Hint not displayed ANSWER: The current is zero. clockwise counterclockwise Part M What is the direction of the EMF in the circuit 42.0 milliseconds after the switch is closed? Hint M.1 Graph of Hint not displayed ANSWER: The EMF is zero clockwise counterclockwise Energy within an L-C Circuit Consider an L-C circuit with capacitance , inductance , and no voltage source, as shown in the figure . As a function of time, the charge on the capacitor is and the current through the inductor is . Assume that the circuit has no resistance and that at one time the capacitor was charged. Part A As a function of time, what is the energy stored in the inductor? Express your answer in terms of and . http://session.masteringphysics.com/myct Page 14 of 15
http://session.masteringphysics.com/myct 04/19/<strong>2007</strong> 05:02 PM ANSWER: = Answer not displayed Part B As a function of time, what is the energy stored within the capacitor? Express your answer in terms of and . ANSWER: = Answer not displayed Part C What is the total energy stored in the circuit? Part C.1 Part C.2 Hint C.3 Charge and current as functions of time Find the resonance frequency Summing the contributions Part not displayed Part not displayed Hint not displayed Express your answer in terms of the maximum current and inductance . ANSWER: = Answer not displayed Summary 6 of 12 problems complete (50.29% avg. score) 27.18 of 27 points http://session.masteringphysics.com/myct Page 15 of 15
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Eðlisfræði 2, vor 2007

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