Two long straight wires piece on the plane of the paper at vertices of an equilateral triangle. They each carry 2 A, out of the paper. The magnetic field at the third vertex has a magnetic of...?
The third vertex is the top of the equilateral triangle. I don't know what equation to use to...
I thought because the fish was placed in the center of the sphere, the distance of the object would be the distance of the radius. I don't, however, know the distance of the observer. Is there a way to explain where the observer would see the fish and the pattern without that distance? How...
i just need a little help with a relatively easy lens question
A small fish is cast into the center of a glass sphere of radius R=5 cm and n=1.5. Where will an observer see the fish? Where will the observer see a decorative pattern painted on the back side of a sphere?
So, I thought I...
I need a little help here.
The question says to consider an inductor with L=16H and an internal resistance of 0.10 ohms. We wish to use this inductor to store 0.10 MJ of energy. What is the rate at which energy is lost to Joule heating in this system? It is not practical to...
Thank you so much!! First of all, I did copy the problem wrong...the last part of the equation was (1-t^3)k. So, it works out! I don't know why I thought that just taking the derivative of r(t) and then using that would work!
Hello! I have a question about a problem I am trying to work out.
The question asks to find the directional derivative of f(x,y,z)=x^2+yz at the point (1,-3,2) in the direction of the path r(t)=t^2i + 3tj+(1-t^2)k.
Ok, first do I find the derivative of r(t) to get 3j +t(2i-2k) and then use...
The question asks:
Find the directional derivative of f (x, y, z) = z ln (x/y) at (1, 1, 2) toward the point (2, 2, 1).
What I did was find the distance between the two points to be the directional vector (i+j-k) and then I took the norm of the direction vector. so my unit vector =...
Q: You have a light bulb in series with a battery to make a complete circuit. Then you have another circuit with two light bulbs in parallel connected to a battery. The lightbulbs in all the circuits are identical and the batteries are the same in the two circuits. Before working with these...
The circuit from point a goes to a capacitor of 3uF, then leads to 2 capacitors in series (2uF and 5uF) that are together parallel to a capacitor of 1uF. From the parallel circuit section you get to point b. Does that make sense? I tried to draw it out...but I guess it didn't work:) Thanks!
Hello. I have a brain fart and this combination circuit has me stumped. Here is a crude representation of the circuit. I had no problem finding the total capacitance (1.34uF), but the second part asks you to find the charge on each of the capacitors, assuming that the potential difference...
The question asks:
Which of the points P(3,2,1), Q(2,3,1),R(1,4,1) lie on the plane
I know this is a pretty easy problem...but I am drawing a blank on where to start? Should I form vectors from each point ? If so, then what?
A little lost!
I need help with this question. I can't see the motion. I have
Consider a solid sphere of radius R with a charge Q distributed uniformly. Suppose that a point charge 'q' of mass 'm', with a sign opposite that of Q, is free to move within the solid sphere. Charge q is placed at rest on the...