Recent content by devilaudy

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    Augmented matrix linear algebra

    Homework Statement Given the system whose augmented matrix is  1 1 1 1   1 −1 0 a   0 1 b 0  Determine (if possible) conditions on a and b such that this system has (a) no solution (b) many solutions (c) a unique solution. Homework Equations -Row reduction -No solution...
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    Conceptual Questions Lenz's Law, Solenoid

    To the right. I know how to use the right hand rule, but in this situation I am confused with the loop inside the solenoid. The magnetic field inside the solenoid points to the right, but how does that affects the current inside the loop? Would the current at location A point outside the paper?
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    Conceptual Questions Lenz's Law, Solenoid

    Homework Statement https://www.dropbox.com/s/17hsoz0zdfoston/Screen%20shot%202013-05-10%20at%2012.37.44%20PM.png 1) A voltage is applied to a solenoid such that a current is flowing in the indicated direction. Inside the solenoid is a single wire loop that is oriented in the same...
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    Magnetic Forces on Moving Charges True or False

    Thank you for answering! I was not really thinking about the acceleration, I thought it would have the same direction as the velocity of the particle! But would it be perpendicular to its motion? Then the acceleration would be parallel to the force exerted by the magnetic field, so the answers...
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    Magnetic Forces on Moving Charges True or False

    Homework Statement Consider a charged particle moving with velocity v through a magnetic field B. Answer True or False. 1) The magnetic field B is always perpendicular to the acceleration a of the particle. 2) The magnetic force F is always perpendicular to the acceleration a of the...
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    Electricity & magnetism, circuit with capacitors

    https://www.dropbox.com/s/gvml20bk7435zoa/a.gif I need to calculate the equivalent capacitance of this circuit, but I cannot tell which of the capacitors are in series or in parallel. Can someone explain to me how can we figure this out?
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    Can the Brightness of Light Bulb C be Increased by Cutting a Wire?

    Homework Statement https://www.dropbox.com/s/8tbqxmeoiulxg7s/Screen%20shot%202013-03-06%20at%207.54.11%20PM.png The three light bulbs A, B, and C do not necessarily have the same resistance. The battery voltage remains constant. Click on a wire to cut that will result in the light bulb C...
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