Recent content by bluedevil09

Homework Statement In the diagram below, an elementary charge (either an electron or a proton, you decide) is accelerated between two charged plates into a magnetic field. The mass of the proton = 1.67x10^-27 kg. The mass of an electron = 9.11x10^-31 kg. D. Find the distance from the...

Wow... thank you! That is pretty easy to understand. For part B, I can figure out everything in the equation I put (with w being angular velocity = 2pi*2, N being loops = 1, A being area = pi*0.15^2, B being magnetic field = 0.8T, and theta = 90 - for quarter of a turn). This gives me the emf...

Homework Statement The drawing below shows a circular loop of wire (raadius 0.15m) connected to a power supply. The top loop is directly over the bottom loop, which is not connected to anything. In the picture, the loops are shown parallel with one over the other, with the perspective...

Of course...I forgot about that. What do you think I should use for calculating the speed then? I know it won't have a speed of 0(they wouldn't make it a 4pt question or give mass), so it has to be moving somewhere.

I just double checked, the signs are correct. Since it gives me a mass and information, I'm sure that it wants a speed calculated, which means that the -3 has to move(it asks for the speed of the new test charge). From that, I'm just guessing that when they talk about changing charges in D...

ah...got it. Well, I'm just going to assume that it is starting from where the +3uC charge was and going to infinity from there since I don't know what else I can do. Thanks for all of your help! I'm not used to asking questions, but I was lost on this one.

Right. The thing is, the net potential is -3V. The charge is now -3uC. There is no reason that it would leave infinity, correct?

I figured it would just remain at infinity also, but the next part gives the mass of the new test charge and asks for its speed when it reaches its final destination. If both the charge and net potential acting on it are negative and the charge is already at infinity, how can you calculate its...

Sorry, one last question. It also wants me to find the location with a -3 microColumb test charge. Would this travel to the +4V potential even though the net charge is negative? I have to calculate its potential energy for the next part, but I should be ok for that as long as I know where it...

The next part of the question asks about the kinetic energy when it arrives. I would only have to use the -7V potential to calculate that and not any of the others, correct?

Thanks, it looks like a great place! I was thinking that at first, but I noticed that it is a 4 point question, so I was guessing that there had to be something more to it. I don't know what else you could do with the info given though. If that was what they were looking for, it would be the...

Homework Statement Consider the following arrangement of potentials and a test charge (not pictured) located at infinity. - To which location will a test charge of +3 microColumbs travel? The potentials are as follows: (-1V) top left (-7V) top right (+1V) lower left (+4v) lower...