Recent content by ninjadrummer8

OH! I'm an idiot. c is just the speed of light isn't it? so 2.99 x 10^8 m/s

yes, you are right. I forgot to add that in my diagram. The angle between the rails and the ground is 50 degrees

Ok, but I run into the same problems again. I have neither c nor E so I am stuck with 3 unknowns.

Homework Statement I need to find the energy transferred per unit time from a microwave oven, and the only information I have is: Wavelength = .122m Peak Magnetic Field of microwaves = 1.3*10^-5 T Homework Equations c=f*lambda I = (c*B^2)/(permeability of free space) = EB /...

Homework Statement This is one of those problems with a U-Shaped Conductor, but this time it is at an angle and the Earth's Magnetic Field is perpindicular to the plane of it. The rails are 10m apart and the conducting rod weights 10 kg. No friction on the ramps, and the only resistance...

Diazona- You brought up some amazing points! Thank you so much for your help. For number 2, for the person running, you are referring to the force of the electric field, am I correct? And one other question, what direction would the electron seem to be traveling from the point of the...

Homework Statement Ok guys, this problem has a few steps to it, and id appreciate any help I can get. Ok, so beam of electrons moving left, positive particles with same but opposite charge moving right, both moving at 1x10^8 m/s. Then there is a proton moving left on top of the beam nearby...

Ok I have a general question. Say I have a bunch of electrons moving in a line, not in a wire, but I guess it could be looked at as if it was in a wire. This is my question: So if i picked a point outside of this line of moving electrons, would I find an electric field? I know that...

can anyone tell me if I am thinking about this right? i don't need any equations I just need to be able to draw the magnetic field

Ok I have 2 questions about this. So I know that a current is induced when the magnetic field changes near the wire. So say I dropped the magnet North end up and South end down through this wire, the current would increase as it was nearing it, and decrease as it leaves it. 1) is this...

F=qvBsin(theta) ? I don't see how this is relevant though, since I am not asked to calculate anything, simply draw in the magnetic field lines

Homework Statement So there's a sphere, and it has a positive charge on it. The sphere is spinning, and the angular velocity vector is pointing up through the top. What does the magnetic field look like inside & outside the sphere? Homework Equations none The Attempt at a Solution This is...

yes, its linear, then suddenly grows exponentially

Homework Statement Graph of current vs voltage. What is happening to the resistance after the linear portion of the graph and why. Homework Equations none The Attempt at a Solution the line is the resistance and it follows ohms law for a while (it is constant and independent...

Homework Statement Basically, this "battery" is actually a variable voltage source. The current is raised and the voltmeter measures the voltage in the resistor. What is the resistance in the region that the current goes from 1-4 Amps? (BTW, the red line is a best fit line.) Homework...