Recent content by ChrisEffinSmi

Thanks for the rapid attention! Unfortunately yes. In actuality it's a small tube fitting welded to a much larger pipe. At first I thought to approximate it as an orifice, but the feed's ID is the same as the fitting's, and the pipe it's welded to is sufficiently large to be considered as...

So, a coworker approached me today with a 'simple problem' to solve, looking to sanity-check a design choice. Much to my dismay, I had no idea how to approach it. Worse, google had no straight-forward answers either, and any formulae I did find seemed circular. This seems too simple to...

Oh gods! How stupid of me! My angle should be \alpha - \phi, not just \alpha. That makes my derived answer sin(\alpha-\phi)*cos(\alpha-\phi+\phi) = cos(\alpha)*sin(\alpha-\phi) which is, of course, the desired result. I should sleep more. Thanks for the reply!

First, I struggled with whether to put this in advanced or intro physics. I read the sticky, and since this is a 300 level class that is taken at the junior level in the physics BS program at my school, I put it here. If it's considered too simplistic for advanced physics, I apologize. I've...

I've been struggling with this for a while now. Cu(ClO4)2 is soluble so it should drop from both sides of the net ionic equation, right? Leaving only H20. Am I missing something? http://usera.imagecave.com/hotrod73dart/question/netionic.JPG

Working on a homework for a general astronomy class. Just want to make sure I'm not being inaccurate. Please let me know if I goofed something up. Thanks! RQ7: The word “apparent” in “apparent visual magnitude” is used to denote its dependence on viewing distance. These numbers refer to...

Thanks so much. It was very difficult until Feldoh pointed out the fact that while the acceleration graph was sloping downward it was still a positive value, meaning that velocity was still increasing, just not as largely incremental. Then it was easy to extrapolate that the negative...

If my newest attempt is correct then yes, your image helped very much. Otherwise, I'm still lost. http://usera.imagecave.com/hotrod73dart/question/vgraphattempt3.jpg

No calculus yet unfortunately. Those sharp points are supposed to be sharply rounded curves, but I don't think that makes much sense either. I'm aware of what acceleration is, but when acceleration is changing at a non-constant rate (curved acceleration graph), then that means that velocity is...

Very tricky velocity vs. time graph Homework Statement Doing a very basic lab on force and motion and ran into a snag with a graph. It's a very wildly changing acceleration graph, and I'm unsure how to proceed with the matching velocity graph. I know that a curved acceleration graph would...

It's frustrating how ambiguous it is. This is a 100-level physics class (introduction to physics), mostly Newtonian mechanics using only algebra/trig. As you can see from the other two graphs, this lab is supposed to be pretty simple stuff. Just getting a feel for what acceleration is and how...

Sorry! Would you believe that the whole time I was posting I was telling myself to remember to mention it was graph b? *sigh*, my brain is mush at the moment. Fixed! Thanks for pointing it out.

I'm working on some physics lab homework and one particular graph is obnoxious. It's hard to tell whether it's intended as a compound curve, or if it's just a piss-poor sketch. I've contacted my professor but he hasn't responded for days, and it's due tomorrow. If I'm not mistaken, the...