Recent content by daimoku

Actually, I was making a silly mistake...answer was off by one decimal place because I misread the area to be 0.015 m^2. Pretty simple problem lol

I tried taking the difference between magnetic fields 1 and 2 but it doesn't seem to be working. Can anyone offer some help?

[SOLVED] Magnetic Field in a Rectangular Conducting Loop Homework Statement Figure 31-64a shows a rectangular conducting loop of resistance R = 0.010 , height H = 1.5 cm, and length D = 2.5 cm being pulled at constant speed v = 55 cm/s through two regions of uniform magnetic field. Figure...

[SOLVED] Emf in a rectangular loop Homework Statement A rectangular loop (area = 0.15 m^2) turns in a uniform magnetic field, B = 0.16 T. When the angle between the field and the normal to the plane of the loop is pi/2 rad and increasing at 0.70 rad/s, what emf is induced in the loop...

Doh! I knew I was overlooking something small. Had to use k=.5mv^2 for the first part to determine the velocity then plug the velocity and displacement into find the time. Once I found the time, I used the acceleration calculated earlier and found the displacement. Simple! Thanks!

[SOLVED] Beam Deflection in a Television Tube Homework Statement Each of the electrons in the beam of a television tube has a kinetic energy of 10.8 keV. The tube is oriented so that the electrons move horizontally from geomagnetic south to geomagnetic north. The vertical component of Earth's...

Yeah, I did mean change in voltage! Thanks a lot for your help!

In figure b, the equivalent resistance is 14 ohms and 10.5 ohms with the switch opened and closed respectively. So, the change in current across R1 with S open is 6.5V and with S closed it's 4.33V. Therefore, the change in potential difference is -2.17V. Does this sound right?

[SOLVED] Change in Electric Potential Homework Statement The resistances in the figures A and B are all 7.0 ohms, and the batteries are ideal 13 V batteries. When switch S in figure b is closed, what is the change in the electric potential VR1 across resistor 1? Homework Equations...

I'm still not really sure this is the proper way to approach the problem but apparently the solution is correct. Here's what I did: Used 20A from above. 400V - 50V - 3.0ohms * 20A = 290V

[SOLVED] Potential Change in a Circuit Diagram Homework Statement http://personalpages.tds.net/~locowise/test/28_29.gif If the potential at point P is 400 V, what is the potential at point Q? Homework Equations Ohm's Law: deltaV=iR Probably the fact that the sum of changes in...

Thanks alot! You were correct-o-mundo on the negative sign!

[SOLVED] Equipotential surfaces Homework Statement http://personalpages.tds.net/~locowise/test/equipot1.jpg Fig. 1 -- Some equipotential surfaces In the figure above, you see a set of equipotentials representing an electric field in the region and some labeled points (A..G). What is...

Thanks for confirming my suspicions. The negative sign was throwing me off. Found the electrical potential difference for both parts to be 1.525V. Thanks again!

[Solved] Electric Potential Differences When an electron moves from A to B along an electric field line in Fig. 25-26, the electric field does 2.44*10^-19 J of work on it. http://tinyurl.com/2s34zk Find the electric potential differences from VB->VA and VC->VA. I think the potential...