Recent content by michelle15g

I just tried to solve this problem. Instead of dividing by d straight away, I integrated d/epsilon and divided the answer by that. I think that's a safe way to handle it. But as you can see, I'm searching the net for confirmation :) Hope this idea works for you. Michelle

Yeah, I understood what you meant but I think there's more to the logic box than logic. A simple LED might turn it into a simpler circuit. http://www.allaboutcircuits.com/vol_1/chpt_5/3.html This site explains a bit about circuit in series and in parallel. After you read that - you should read...

Thanks Bobby, I read a little about the subject and I'll do some more reading. I still feel like there's a part of the puzzle missing since it seems like more charge is transferred than needed and then some of the charge is returned. Most physics laws strive for minimal energy usage for things...

Bumping, is there a good book I can read on the subject?

I think that when you connect to a logic box - you don't care what voltage you get exactly. What you care about is getting a logical one or logical zero. BTW, what kind of bulb is connected to the logic box? Is there a separate VCC connected to it allowing it to turn on the light? I think...

Hi sgstudent, The voltage on a resistor or LDR can change. In other words - the distribution doesn't have to be the same for the resistors in parallel. If you add an identical resistor - it won't have the same voltage distribution as the others. The current through the resistors doesn't have...

I hope I managed to follow you. Maybe a link with the circuit would help. If I understand correctly than you're asking why there's another resistor connected to the LDR. The reason the LDR is connected in series with a resistor is to limit the current that reaches the input. The distibution of...

Hi, I have a question about lightning return strokes. It makes sense when I think about the return stroke on its own - as in lightning from the ground to the cloud but I'm a bit confused when I think about it as a reaction towards lightning. Why does it occur? Doesn't lightning equalize the...

Thank you very much. My problem was that I kept skipping to the bottom instead of finding the speed at every angle in which case the integral was irrelevant.

Homework Statement There are two beads at the top of a hoop that is tied by a string. The beads start moving downward on the hoop on each side. M is the hoop's mass and m represents each bead's mass. What is that mass ratio that will cause the hoop to elevate.Homework Equations T>= (M...