# Search results

1. ### Magnetic Force Experienced by a Loop of Wire

Homework Statement The problem is shown in the link below: http://postimage.org/image/do2b7xz0b/ [Broken] Homework Equations Biot-Savart Law's and dF=Idl x B The Attempt at a Solution My attempt is really just a mess. I essentially want to break it up into 2 segments. (1) Being...
2. ### E-field of a molecule on a point

Homework Statement http://postimage.org/image/cky823nof/ [Broken] Homework Equations E=kq/r^2 The Attempt at a Solution I figured I would just find the electric field produced at point * by each individual charge and then add them. For example if I were to set E1 to be the top molecule...
3. ### * *Damped Harmonic Motion (Differential Equations)

*URGENT*Damped Harmonic Motion (Differential Equations) A damped harmonic oscillator satisfies the following equation: d2x/dt2 = − 5x − 2dx/dt (a) By assuming a trial function of the form x = A e^qt, determine the solution of this equation "from scratch." Express your final answer as a real...
4. ### Charged Shape Described by a Function - Urgent

The Image has all the details: http://img38.imageshack.us/img38/3448/question3p.jpg [Broken] Uploaded with ImageShack.us I honestly I have no Idea as to where I should begin. Any hints on how to get started?
5. ### Triple Integral Problem

Homework Statement the limits of integration are s[0,R] p[0,2π] z[0,L] respectively kp∫∫∫s/sqrt(s^2+(d-z)^2)dsdpdz Homework Equations The Attempt at a Solution You can double check my work but I'm pretty sure I got the first to integrations fine (with respect to s and p)...
6. ### Uniformly Charged Cylinder - Potential at distance d?

Homework Statement Consider a uniformly charged solid cylinder of radius R, length L and charge density ρ. Find the potential at a distance d (> L/2) from the centre of the object, along the axis of the cylinder. Homework Equations V=∫kdq/r The Attempt at a Solution For me, it...
7. ### Two thin rods on the x-axis

Homework Statement Two thin rods of length L lie along the x-axis, one between x = a and x = a + L, and the other between x = –a and x = –a – L. Each rod has positive charge Q distributed uniformly along its length. a. Calculate the electric field as a function of x produced by the rod on the...
8. ### Expressing a surface in cartesian coordinates from spherical

Homework Statement The following equation describes a surface in spherical coordinates. θ =pi/4 Write the equation in the cartesian coordinates? that is, (r,θ,Ø) to (x,y,z) Homework Equations x=rsinθcosØ y=rsinθsinØ z=rcosθ r=sqrt(x^2+y^2+z^2) θ=cos^-1(z/r) Ø=tan^-1(y/x) The...
9. ### Using F=kvx in order to describe x as a function of t

Homework Statement The force acting on a particle of mass m is given by F=kvx in which k is a positive constant. The particle passes through the origin with the speed v naught at time t=0. Find x as a function of (t) Homework Equations F=ma a=(dx/dt)(dv/dx) The Attempt at a...
10. ### Uniformly Charged Ring Acting on a Particle

Homework Statement Solve for the Electric force exerted on a Particle a distance z above a uniform ring of charge Q. Determine the potential energy of the charge where the charge lies directly in the center. Homework Equations F=kq1q1/r^2 The Attempt at a Solution Knowing E=F/q I...
11. ### Confusing Integral!

Homework Statement int[x/((L/2)+d-x)^2] * the integral of x over [(L over 2 + d - x) all squared]* Homework Equations Integral chart The Attempt at a Solution I have done this so many ways with so many different answers. Could somebody who is without a doubt sure of the...
12. ### Electric Potential Energy of a Cube of 8 protons

Homework Statement Suppose we there is a cube (a x a x a) made up of 8 protons. 1 at each point What is the Electric Potential Energy Homework Equations U=q1*q1/4*pi*epsilon_0*r The Attempt at a Solution *U12 = Potential Energy to bring 2 to 1* I'm aware of how to do the...
13. ### Force exerted by a charged rod on a point charge

Homework Statement Determine the electric force exerted on a negative point charge –Q located a distance d away from a line segment of charge, extending from –L/2 to +L/2 along the x-axis. The line segment has a non-uniform charge distribution, lambda(x)=lambda_0*x . Homework Equations...