Recent content by TwinGemini14

A square current loop (ABCD) is oriented in the x-y plane. There is a current in the loop in a clockwise direction (as viewed from z > 0). A constant magnetic field is in the +y-direction. The length of each side of the loop is a. The +z-axis points out of the page...

I see. 2) So the answer will be C, correct? Since there is no potential difference across that capacitor right when the switch is closed, it will begin a 0. Then it will grow and once the capacitor is filled, no current will flow anymore so it dims. Is that right? 3) Would the answer...

Three common light bulbs and two identical capacitors are connected to a battery as shown in the figure below. The switch has been open for a long time. At t = 0 the switch is closed. The light bulbs are all identical and the battery has a value V = 6 V. (The brightness of a light bulb depends...

So then if the charge at 2cm is -2 uC/m, then at 3cm, it must be +2 uC/m since the charge between 2cm and 3cm must be zero. Right? So the answer is D.

An infinite line charge lies on the z-axis with l = 2 µC/m. Coxaial with that line charge are: an infinite conducting shell (with no net charge) with thickness 1 cm and with inner radius 2 cm and outer radius 3 cm, an infinite shell with a radius of 4 cm and with a net charge of -5 µC/m, and...

Sorry about that! I don't know what happened, but here is the link to the diagram. Thank you so much! http://i662.photobucket.com/albums/uu347/TwinGemini14/elecshell.gif

An infinite line charge lies on the z-axis with l = 2 µC/m. Coxaial with that line charge are: an infinite conducting shell (with no net charge) with thickness 1 cm and with inner radius 2 cm and outer radius 3 cm, an infinite shell with a radius of 4 cm and with a net charge of -5 µC/m, and...

I don't understand how to set up this integral. Will the limits be from 0 to infinity? inf. k | (-2.3*10^-6)y / (3+y)^2 0 | = integrand Does this look right? I seriously do not understand how to set up this equation. Help please!

An infinite line of negative charge begins at the origin and continues forever in the +y-direction. It has a uniform charge distribution of λ = -2.3 μC/m. Calculate the x and y-component of the electric field at the point (0,-3 m). ------- So immediately realized that Ex = 0 since te...

http://i662.photobucket.com/albums/uu347/TwinGemini14/showme5.gif Consider a triangular wave pulse shown traveling to the right on a rope with a speed v. Its height is h. The total length of the pulse is 3L, as shown in the figure. The vertical displacement is much exaggerated. The solid line...

Ah, nice catch. I would agree with you. So it sounds like the answer is B.

http://i662.photobucket.com/albums/uu347/TwinGemini14/showme3.gif The top picture to the right is the picture of the rope before the wave pulse arrives, and the bottom picture to the right is a picture of the rope after the wave pulse has arrived. Notice that the rope has to stretch in...

Oh, so wouldn't it just be pi?

I just assumed that when the block hits the spring, it compresses it and then the spring restores back to its equilibrium position, thus releasing the block then. In that case, it travels one complete oscillation. That was my assumption. Can somebody please explain the physics behind this...

http://i662.photobucket.com/albums/uu347/TwinGemini14/showme2.gif A box of mass m slides at an initial speed v into a relaxed spring of spring constant k. How long is the box in contact with the spring before it passes the equilibrium position again? A) tcontact = 2p [k/m]½ B)...