Recent content by Tater

So out of curiosity, since this was a point charge: V=\frac{Q}{4\piεR} But is it also fair to say that we could have used V = - ∫E dl ? I'm just curious as to why we're integrating to find potential because technically it is a point charge and we don't have to. This problem was a...

Homework Statement A point charge Q is located at point P(0,-4,0) while a 10nc charge is uniformly distributed along a semicircular ring as shown in the figure. find the value of Q such that E(0,0,0)=0 Homework Equations Q=ρLdl dl = ρd∅ (because ρ and z are constant)...

Qenc= ρsdS Qenc=ρs2∏*\frac{1}{2}(b2-a2) ρs=Qenc/∏(b2-a2) So now I'd have to find resultant vector R (I'm bad at this). Here goes though: If I drew a triangle with a radius of r and a height of h I would get: R=(r2+h2)1/2. But now I'd have to convert this to cylindrical coordinates, so I...

Thanks for your response :) A few questions though, Charge enclosed: Qenc= ρsdS I don't understand how I can solve for this when I don't know what ρs or Qenc are. Also I don't understand your last comment: E=−∇ϕ Did you mean to use E=−∇V (where V is the potential)? As always...

Hi everyone, Homework Statement Let a charge Q be uniformly distributed on a circular ring defined by a < \rho < b. Find D at (0,0,h). Homework Equations E = kQ/r2 ar D = \epsilono E The Attempt at a Solution Well I thought I had this figured out, but I was wrong and I still...

Homework Statement The plastic tube has a cross-sectional area of 5.00 cm². The tube is filled with water until the short arm (of length d = 0.800 m) is full. Then the short arm is sealed and more water is gradually poured into the long arm. If the seal will pop off when the force on it...

Whoops. Thought I stuck that in there. Anyways, all I have to do is convert it to spherical coordinates (from rectangular to spherical).

Homework Statement The outermost integral is: -2 to 2, dx The middle integral is: -sqrt(4-x^2) to sqrt(4-x^2), dy The inner most integral is: x^+y^2 to 4, dz The attempt at a solution Drawing the dydx in a simple 2d (xy) plane, it is circular with a radius of 2. So...

Hi there. This problem is very basic but I really cannot figure out how to solve it. I'm missing something but I have no clue what it is. Homework Statement Three forces act on a moving object. One force has a magnitude of 80.0 N and is directed due north. Another has a magnitude of 60.0 N and...