Recent content by ash-kennard

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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    solved it using the matrix, cheers lads xxx
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    ignore that last one I am going to try a different method haha
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    hi again, had another snag. just need to know what http://upload.wikimedia.org/math/d/e/a/deaad034b920ebb32655dd9c00a80a7b.png means before i can substitute it into the rows like in this example http://upload.wikimedia.org/math/d/e/a/deaad034b920ebb32655dd9c00a80a7b.png
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    brilliant, thank you very much tiny-tom and matlabdude. ill let you know how i get on
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    just a quick on now, if i have mesh 1: V=R1*(I1-I2)+R4*(I1-I3) mesh 2: 0=R5*(I2-I3)+R1*(I2-I1)+R5*I2 mesh 3: 0=R3*I3+R4*(I3-I1)+R5(I3-I2) rearranged so they can be solved using a matrix will they look like this? mesh 1: I1*(R1+R4)-I2*(R1)-I3*(R4)=V mesh 2: -I1*(R1)+I2*(R1+R2+R5)-I3*(R5)=0 mesh...
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    bollocksed the calculation of R1, so here's the new picture haha
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    so it is this? I1= V=R1*(I1-I2)+R4*(I1-I3) I2= 0=R5*(I2-I3)+R1*(I2-I1)+R5*I2 I3= 0=R3*I3+R4*(I3-I1)+R5(I3-I2)
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    Using Mesh Analysis to Solve for Current and Voltage in Complex Circuits

    this question is part of my electronics CW, I've done it before, but briefly. and looking back at all my old notes I've realized that every single one I've done before has 2 sources and only 2 loops, whereas you can see from the image below that this has 3 and its getting me in quite a...
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    How to Calculate Heat Transfer Rate Through a Furnace Wall?

    right cheers for that then. i know how to do it providing that is is delta 40, i also know how to do it given 2 temperatures so cheers for the help. was annoying me greatly much appreciated, ash
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    How to Calculate Heat Transfer Rate Through a Furnace Wall?

    i was talking to my dad about it earlier today too. but that's the exact question, haven't re worded it at all. a furnace implies very hot temperatures, and the 40k must have to be a difference. but i wanted to see if i was overlooking something so posted on here. is there anyway to get any...
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    How to Calculate Heat Transfer Rate Through a Furnace Wall?

    Homework Statement a furnace wall has an area of 3m^2. a thickness of 250mm and a thermal conductivity of 1.5 W m^-1 K^-1. calculate the rate of heat transfer through it when the temperature is 40K Homework Equations Q/t=KxAx(T2-T1)/LThe Attempt at a Solution This isn't homework as such, it...
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    Impulse on a Pendulum with a Bullet

    safe. thanks a lot man. been beating my head against a wall about this one
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    Impulse on a Pendulum with a Bullet

    can no one tell me where i went wrong? pretty please?
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    Impulse on a Pendulum with a Bullet

    BUMP no one has any idea how to help me :( ?
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    Impulse on a Pendulum with a Bullet

    Homework Statement A bullet of mass 0.04kg is fired horizontally into a wooden block of mass 0.09kg. the wooden block is suspended from the ceiling by a long string. after an impact the bullet is embedded in the block and bullet and the block swing together until the block is 0.10m above its...