# Recent content by mister_okay

1. ### Help with triple integration problem

oh ok...forgot about the negative. thanks!
2. ### Help with triple integration problem

Hey thanks arildno :) but one question.. shouldnt it be cos(pi/4)-cos(pi/6) instead of cos(pi/6)-cos(pi/4)?
3. ### Help with triple integration problem

hey! i need some help with a triple integration problem using spherical coordinates. it's the volume of a small part of a sphere. rho from 5 to 6, phi from pi/6 to pi/4 and theta from pi/4 to pi/3. i got an answer of (-91/72) x pi x (sqrt(2)-sqrt(3))...am i right? Thanks!
4. ### Other Should I Become an Engineer?

Is there such thing as automotive engineering? If there is, can someone give me some brief info on it (no links please).
5. ### Building Your Own Computer

I don't mean to imply that any of you are stupid or anything, but I don't think my question was fully understood... When you say you mess up plenty of things when doing it for the first time, do you mean mistakes that are 'fatal' to computer hardware? Perhaps my question was not clear...
6. ### Building Your Own Computer

I understand that it must be easy to learn and I can see why it is straight-forward. But assuming that my friend never did it before, has no manual and has no one there to help him, what are the chances that he will mess up? What if he simply does not understand the concept of grounding? In...
7. ### Building Your Own Computer

Greetings, its the noob again:) Recently I had a discussion with a friend of mine who claimed that he knew how to set up his own computer (putting the parts together, not making the parts themselves). When I asked him if he's ever done it, he said no, but he said that he knows what most of...
8. ### Circuit Help

This is such a noob question, but why is willib's diagram grounded? I can see why cosmik's diagram is ground (to complete the circuit), but why does a circuit connected from - to + on the battery need to be grounded?
9. ### Battery Questions

But what exactly is the memory effect and voltage depression?
10. ### Battery Questions

Hello everyone:) I have questions regarding the "memory effect" and voltage depression. 1.) Could someone explain to me in layman's terms exactly what they are? I don't quite understand the explanation on wikipedia.org. 2.) Additionally, my friend told me that when you turn your mp3...

How does electromagnetic radiation as described by rbj induce an alternating current in a wire?
12. ### Basic Power Distribution Questions

Thanks cliff J:) So in other words, the neutral serves as a reference voltage for the live?