Recent content by coldturkey

ahh i can see what you did now. I'll have a crack at it, thanks for your help

They are the same b and c as I take it. Where do you get a_0 = {a_1^2 \over 4 a_2} from. I just assumed that it was trying to say a_{2}b^2 + a_{1}b + a_{0} = 0

Consider 2nd order differential equation: a_{2}y''(x) + a_{1}y'(x) + a_{0}y(x) = 0 Let b and c be the roots of the quadratic a_{2}x^2 + a_{1}x + a_{0} Verify that when b = c then xe^{bx} is a solution of the Differential equation. ----------------------------- Ok so I...

---------------------- Let V be the solutions to the differential equation: a_{1}y' + a_{0} = x^2 + e^x Decide using the properties of pointwise addition and scalar multiplication if V is a vector space or not. --------------------- Ok I am having real trouble with this...

I still can't find the error in my kirchhoffs one. Could you point me to the right part?

Oh, did you put the circuit in multisim to make sure it is correct? Thanks

Thanks heaps. I knew one of them would be right, and the thevinen is the simpler one to do, but i couldn't see where I went wrong in the kirchhoffs one. I will have another crack. Cheers

I have a question here which asks me to find the Voltage and Current of RL in two different ways: using Kirchoffs Laws and then Thevinens Theorem. I have tried it a couple times and get different answers using each method. Perhaps somebody could tell me where I have gone wrong or if...

There is nothing even similar to having a dielectric constant of 1.16 2.55 is very similar to polystyrene (2.6)

I don't know the correct answer but I got 2.55 using GCT's method. How about you?

well I wasnt sure what the relationships were all about so I just decided to try all possible cases and see what I came up with.

I tried it using your formula and I get 24.8 ohms and 14882 ohms. This is roughly half of what I got before. Any ideas?

A controller on an electronic arcade game consists of a variable resistor connected across the plates of a 0.220\mu F capacitor. The capacitor is charged to 5.00V, then discharged through the resistor. The time for the potential difference across the plates to decrease to 0.800V is measured by a...

Was the ball stopped at 0s? Because if it was stopped at the start and stopped at the end it should tell you something about the acceleration.

Thanks, that makes sense. But its stupid that there are no examples of these types of problems anywhere