Homework Statement
Hi, I am solving a system of differential equations and in one of my equations I have this,
(D+2)X+(D+2)Y=0 where X and Y are variables, D is my differential operator.
My question is, would it be mathematically correct to divide out (D+2)
and thus getting X+Y=0, X=-Y ?
Homework Statement
How much time does an RC circuit require to become fully charged assuming that the capacitor was initially uncharged.
resistance = R
capacitance = C
Voltage = V
Homework Equations
Q=CV(1-e^(-t/RC)The Attempt at a Solution
so T = -ln(Q/(CV) - 1)RC
but Q = 0 since it's...
Sorry, I don't. I'm not fluent enough to understand his proof without further explanation.
edit:AH, I think I finally understand the proof.
This means that the integrating factor would be e^(∫(fx)dx) correct?
Ah, but my original question was whether this was a Bernoulli equation or a First Order Linear DFQ(if it is, why), b/c in the video, they stated n=1 as a First Order LinDFQ
In a video I was watching regarding how to solve these, the lecturer said that
the form of a Bernoulli Differential Equation is y'+P(x)y=q(x)y^n
where n>1
This means that if n = 1, it wouldn't be a Bernoulli differential equation and would be a first order linear differential equation, but if...
Oh no, I was geometrically incorrect, I've been working with so many spheres that I assumed this was a sphere in the math even though I knew it was a disc.
That fixes everything. Thank you!
I confirmed with my professor about a week ago that it is to be solved using the flat plate approximation. He normally doesn't reply on the weekends though so I figured I'd go on here for help. I can't think of any other path to take regarding this problem.
Homework Statement
The charge center of a thundercloud, drifting 3.0km above the Earth's surface, contains 20 C of negative charge.
Assuming the charge center has a radius of 1.0km Calculate the Capacitance of the system.
Homework Equations
C=8.85*(10^(-12))*A/d
Where A is the area, D...
Ah, I never thought of using Kirchoff's loop law for some reason, but after you made the connection for me I understand what you mean. Thanks for taking the time to help me :)
They aren't equal, I calculated them. V1=V5, and V3=V4, V2=V3+V4.
My question was though, how can we say that they are in parallel(C2, C3, C4) if their voltages do not equal. I am probably not interpreting your statement correctly.
Yes greatly, you explained how to find series/parallel connections much better than my book, all my book said was if the charge is equal they are in series, if the voltage is equal they are in parallel.