Recent content by chevywaldo

That doesn't answer the question. Yes I can explain it using math myself, but that's not the point. Sometimes in physics it's necessary (and often more useful) to understand "why" something happens instead of using only math to show explain. If you only use math to understand physics then you...

Can someone explain to me Bernoulli's principle as to why the pressure across a restriction varies as the square of the velocity? I'm looking for an understanding (conceptual) as to why this is without a gazillion math examples please. Thanks.

ok - much better. Now I get it. I thought I was loosing my mind. Plus, I've got a veteran guy at a jobsite in Texas telling me that they don't figure voltage drop on the total length of wire, rather they use the distance from power supply to load (half the total length) I was arguing with...

that helps a little bit - but I'm still not getting it. checkout this website. They explain an example scenario where there is a 350 run of paired wired. Are they saying the total length is 350 feet, or half the distance is 350 feet? Then they calculate the voltage drop based on 350 feet...

I'm not understanding something very basic here. I know what voltage drop is. At least I thought I did. Here is a question: Assume you have a power supply in a control panel of a building. 500 feet away is the load device. When doing voltage drop calculations for the wire (500 feet...