Recent content by Th3Proj3ct

If you take a screwdriver for example, and hit it a few times near the tip with a hammer or something hard; why does the screwdriver become magnetic? I was shown someone doing this, and shortly afterwards it was able to attract nails or screws around.

Sorry for such a general question; but does any know, or know where to find what type of physicists normally work at a particle accelerator? I'm hoping there's something more detailed than just 'particle physicists' and 'theoretical physicists,' but maybe that's all there is. Thanks to whoever...

As I said before, thanks a ton; it all really helped. I was able to finally get the right answer and yes you were right [i edited the original post with the correct work, giving the correct answer. Very much appreciated!

small n is what's needed in the function for the magnetic force(B) though, and if I do that, I just get 772/.772 (if 77.2cm is the length), so the little n is 1000? btw is the other stuff looking right? Edit: And thanks for all the help, this problem has been driving me crazy.

Was that how I was supposed to figure that out? The number of turns was one of the biggest issues I had in this problem. n is supposed to be the turns per length though, right? And to do that I should take the total number of turns divided by the overall length, which would be 772/(2πr) or...

Homework Statement A solenoid 10.0 cm in diameter and 77.2 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. The wire is wound onto a cardboard tube in a single layer, with adjacent turns touching each other. What power must be delivered to the solenoid if it is...

If everyone believes that there's an equal and opposite reaction for everything, should the universe go out to a point and stop; or will it end up coming back to its origins?

Well for E, i used the 3.7x10^3 N/C, and A I used (3.1416*.05^2*4). Epsilon is a constant, so I figured it would be easy to solve for Q, but I get -1.03x10^-9 C, which is within 10%-100% off; so I know I'm somewhere in the range of the answer.

I'm stuck on a problem trying to determine charge, and I'm hoping someone can help. Suppose that a = 5.00 cm, b = 20.0 cm, and c = 25.0 cm. Furthermore, suppose that the electric field at a point 15.5 cm from the center is measured to be 3.70 *103 N/C radially inward while the electric field...

Ugh, so it was the difference in the mass and distance; no idea why i took the sum. Thank you.

New question: A spring is suspended vertically parallel to a meterstick. When a 130-g mass is attached to the bottom of the spring, the spring stretches until its bottom is adjacent to the 20-cm mark on the meterstick. Based on this measurement, the value of the spring constant is 6.37...

Homework Statement A spring is suspended vertically parallel to a meterstick. When a 170-g mass is attached to the bottom of the spring, the spring stretches until its bottom is adjacent to the 80-cm mark on the meterstick. When a 760-g mass is then used to replace the 170-g mass, the bottom...

So Vosin38=Vysin52, Vy=(vosin38)/sin52) Vy^2 = vy^2 + vo^2 <--- Plugging it into this (vosin38)/sin52)^2 =(vosin38)/sin52)^2 + Vo^2 Vosin38^2 = Vosin38^2 + Vo^2sin52 Vosin38^2 -Vosin38^2 -Vosin52^2 = 0 Vo(sin38^2-sin38^2-Sin52^2)=0 Vo(Sin52^2)=0 Vo=0/(sin52^2) ??

Homework Statement Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving with a speed of 4.40 m/s. After the collision, the orange disk moves along a...

Thank's all, I combined what you two said and got: 0.5kx^2=17.64+14.7x; 160x^2-14.7x-17.64 which I put into the quadratic formula and got 0.381 as one of the answers. The rest should come pretty easily now. Thanks you two for all the help, I use these forums all the time and you guys really...