Recent content by feihong47

i think i kinda get it now. thanks guys

Homework Statement : [/B] This is such a basic question that even though it's not a HW problem, I don't know where else to put it. Please see http://i.imgur.com/3O5YrAP.jpg . Why does the person on top get shocked and not at the bottom? More specifically, why is there a current through the...

It's never a good idea to seek individualized medical advice on an open forum. Please read the sticky: https://www.physicsforums.com/showthread.php?t=173247

Diet and exercise ARE still first line therapy before any statins are recommended in most cases. Only if the individual still maintains a high LDL above the threshold after a certain period of time despite diet and exercise, are then recommended for drug therapy...

It is rare to see B12 deficiency solely due to decreased intake from foods. Most of the times, surgical patients who are surgically devoid of a stomach or terminal ileum (due to tumors, or other disorders) can be deficient in B12 due to the inability to absorb or produce intrinsic factor that...

Thanks! Much appreciated.

The other thing I want to confirm is -- the subwoofer states the cord is a 110V power cord, but the plug itself has a voltage on it that says 250V. I should go with what is stated on the subwoofer correct? (And ignore what is on the plug itself?)

Thanks! It certainly looks like what I need. I did order the plug you mentioned for 2 bucks. Let's hope it works.

I'm not really sure where this question would go, or if it should go in this forum at all. This isn't an engineering question per se, but please help me if you can. I bought a set of speakers for my computer recently on Ebay. Apparently all the manuals are in Spanish (which wasn't much of a...

Thanks guys, that was good!

LOL. I like your emphatic NO. But yea, that sounds very messy indeed... I see some x^{2}h^{2} - x^{4} = 144h^{2}... Just this alone makes me not want to do it...

Ok. If I only have to express it in terms of x then I can do it. Glad to know that it's physically impossible to express it in P. Thanks!

I certainly did. But I still have to assign a variable to one of the sides, ie x, and then the other side would be \sqrt{h^{2} - x^{2}} It doesn't help me in putting h in terms of P however, because now P = x + h + \sqrt{h^{2} - x^{2}} How can I express h only in terms of P ?

Homework Statement The altitude perpendicular to the hypotenuse of a right triangle is 12 cm. Express the length of the hypotenuse as a function of the perimeter. Homework Equations The Attempt at a SolutionSo I have to express the hypotenuse (h) in terms of the perimeter. I tried to find the...

Very nice approach. Thanks!