Recent content by zr95

Homework Statement Homework Equations Voltage Division v2 = vs * (r2/(r2+r1)) KCL - sum of all currents at a given node is 0 V= i * r The Attempt at a Solution [/B] This is my solution...

I completely looked over the 25 ohm resistor when I did that. Thanks.

Homework Statement Find Req in the given circuit Homework Equations Series: req = r1+r2... parallel: 1/req = 1/r1 + 1/r2 ... The Attempt at a Solution Without redrawing the circuit I do: 12||60 = 10 10+20 = 30 30 || 30 = 15 15+10 = 25 25||25 = 12.5 12.5+15+5 = 32.5 = Req This is the correct...

Homework Statement Homework Equations Series: Req = r1 + r2... Parallel: 1/req = 1/r1 + 1/r2... The Attempt at a Solution This is my professors solution for the problem and of course without any explanation it doesn't make sense to me. Under what principle can he justify immediately adding...

You da man. That makes a lot of sense.

Homework Statement I'm studying for a test and since this is technically a textbook problem I figured I'd post here to prevent being flagged. I have the circuit redrawn. Homework Equations Series: Req = R1+R2... Parallel: 1/Req= 1/R1 + 1/R2... The Attempt at a Solution I want to understand...

My teacher mentioned in class the note I put in the top right corner which would make it easier to solve the whole thing in one go.

I decided just to solve using mesh currents. My professor's supposed easy way to solve it without having to solve for Vth then Isc apparently wasn't all that much easier for this problem.

If I were to solve this using KVL and I made 3 loops the first loop would give me a value i1. That value i1 would be the current across the 3kohm resistor. i2 would be the current across the 2kohm resistor. Can I consider that part of the wire with i0 to be i1-i2? Or for the sake of my KCL...

I need to eliminate v1 when I'm solving the system. How can I do this with having v1/Rx now being involved? I can't eliminate this term or combine it with the other v1. If I find a common denominator to combine it I can't eliminate that whole thing.

I did it real quick and my final answer was 20 ohms. I could however be wrong though because I'm taking circuits now like you. My method of solving was to solve that top portion like you did and then ignore it and go back to the right side. If you just keep solving from the right and work your...

Homework Statement Homework Equations Node Voltage Method V=IR The Attempt at a Solution KCL at Node 1: KCL at Node 2: i is the current moving towards "a" I've simplified the two equations down but the problem I run into is that normally I'm able to write a third equation to define i0...

Your lamda defines it as 60 cars/ min. I imagine the reason he said this is sticking to that definition so even in the situation where you have more than 1 car pass within a minute you refer back to what you defined as lamda and the logic holds.

Given a continuous random vector (X,Y) with a joint density function In order to check whether it is indeed a joint density ƒ(x,y) the method is to check if ∫∫ƒ(x,y)dxdy=1 where the integrals limits follow the bounds of x and y. However, is it the case that if given an arbitrary discrete random...

To give you a hint, what happens if we plug in -2 for x? Pay attention to the denominator.