Recent content by toosha88

Would it not be the equation kq/r? I used K(-Q)(+Q)/a (because the the charges are Q with positive or negative and the length between them is a..hope that makes a bit more sense.

I am working on the same problem and have attached a link for the diagram: http://session.masteringphysics.com/problemAsset/1126168/2/Walker4e.ch20.Pr100.jpg I took the advice already given on this board and used conservation of energy and started with: 1/2mvo^2+K-Q+Q/a=1/2mvf^2+0 (0...

Thanks for the advice! But, if i were to calculate the force in the middle of the circle wouldn't that just equal zero? Would i then just calculate the force on the ONE charge inside the circle? Im still confused!:confused:

Homework Statement Twelve identical point charges are equally spaced around the circumference of a circle of radius 'R'. The circle is centered at the origin. One of the twelve charges, which happens to be on the positive axis, is now moved to the center of the circle. Part A Find the...

BTW You don't need to mess with energy here. It's a simpler problem than that. But don't just look for values of variables to plug into the formulas, if that were all there is to it you'd be doing a pure math problem. What are the meanings of the variables in the formulas. (as in what does...

Im sorry, I am really bad at physics hahaa, are you hinting that i should use conservation of energy?

I tried using that formula but we don't have T and K. so its 2 unknowns. am i missing something ?

Thats the entire question I was given. But I was given a figure and I attached it!

Homework Statement Two 47 blocks are held 30 above a table. As shown in the figure, one of them is just touching a 30-long spring. The blocks are released at the same time. The block on the left hits the table at exactly the same instant as the block on the right first comes to an...

I tried using that equation, however we do not have the amplitude, leaving us with two unknowns in the equation :S

Hey, Ive been working on this problem and i used T=2pi * root k/m and got 14.81..im not sure where to go from here to get the time after though. i tried using the v=-Asinwt equation and got 5.77 which is wrong. Any help is greatly appriciated. Thanks in advance!