Recent content by Gabe805

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    When Is the Potential Across a Capacitor Equal to That Across a Resistor?

    I just uploaded another pic. In case that one doesn't work, the circuit is just an RC series circuit with a battery and a switch.
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    When Is the Potential Across a Capacitor Equal to That Across a Resistor?

    Homework Statement . Switch http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math152.gif in Fig. 27-63 is closed at time http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math164.gif, to begin charging an initially uncharged...
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    Battery connected outside a circuit

    Looking back at my first post, I see that the relevant info was not posted. Emf=12V R1=2000 R2=3000 and R4=4000 ohms. To answer the question in the problem statement, don't I need to first calculate what the current is through the circuit? By equivalent circuit, I meant finding the...
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    Battery connected outside a circuit

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    Battery connected outside a circuit

    Sorry about that. Here it is.
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    Battery connected outside a circuit

    Homework Statement How do I get the equivilent circuit in this scenario? The battery is not directly connected within the circuit. I know how to find the equivilent resistance in situations where the battery is "inside" the circuit but I am having a little trouble with this one. The voltage...
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    Undergrad Finding the area of a circular strip

    Yeah, I had a hunch it had something to do with that. If the inner and outer radii are different, then it doesn't wind up being a rectangle. Thanks for the reply.
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    Undergrad Finding the area of a circular strip

    http://edugen.wileyplus.com/edugen/courses/crs7165/art/qb/qu/c29/pict_29_93.gif if I wanted to find the area of the outer circular strip, I know I would just take the area of the composite and subtract out the inner radius. (i.e. pi(a^2)-pi(b^2)). However why can't I use...
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    Why can multiple dialectrics be treated as capacitors

    Homework Statement [/B] I have come upon a number of problems where there are two or three different dialectrics inside a capacitor. according to the solutions manual I can often treat the dialectrics as capacitors in series or parallel. My question is why can you treat them as capacitors...
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    Undergrad Atmospheric Pressure at Spout of Water Tank

    Makes sense. Thank you for explaining it to me!
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    Undergrad Atmospheric Pressure at Spout of Water Tank

    Thank you. I understand now.
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    Undergrad Atmospheric Pressure at Spout of Water Tank

    Ok, I guess I am just confused where the pressure goes from inside the spout. What causes the water to come out of the spout? Is it gravity or pressure or a mixture of both?
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    Undergrad Atmospheric Pressure at Spout of Water Tank

    Picture an open cylindrical tank with a spout at the bottom from which water is flowing. Why is the pressure at the spout equal to the atmospheric pressure? I thought pressure increases with depth (i.e. rho*g*h). The explanation I have been given is that fluid that is exposed to the...
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    Undergrad Why do the forces not net out to zero in a system in static equilibrium?

    oh my gosh! How could I forget that! Thank you very much.. its been bugging me for three days now.
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    Undergrad Why do the forces not net out to zero in a system in static equilibrium?

    I understand that for a system to be in static equilibrium the sum of the forces and torques must equal zero. I understand why the torques must net out to zero but not the forces. For example, if you picture a wooden plank pivoted at the center with a small mass on the far left end and a very...