Recent content by JSGandora

Homework Statement Locate two charges q each and two charges –q each on the corners of a square, with like charges diagonally opposite on another. Show that there are two equipotential surfaces that are planes. In this way obtain, and sketch qualitatively, the field of a single point charge...

So the electric field by one of the spheres, say the shell of charge Q, is the same field as caused by a point charge Q at the center of that shell. So can we say that the potential outside the shell satisfies Laplace's Equation? Then the average value of the potential over the shell of charge...

Homework Statement One of two nonconducting spherical shells of radius a carries a charge Q uniformly distributed over its surface, the other a charge -Q, also uniformly distributed. The spheres are brought together until they touch. What does the electric field look like, both outside and...

Oh strange, I must have inputted it incorrectly. Then E_C = 1333 MeV. How do I convert that back to the initial reference frame?

If you change to the rest frame of C*, then only E^2-p^2c^2=m^2 c^4 is conserved which is, 1628 MeV. Then if it decays to its unexcited state, we can apply conservation of energy (energy stays at 1628 MeV) and conservation of momentum (which stays at 0) to get E_\gamma + E_C = 1628 MeV...

Homework Statement Particle A (mass 1000 MeV/c^2) is at rest at the center of a spherical gamma detector, which completely surrounds it except for a small hole. We accelerate particle B (mass 500 MeV/c^2) to a total energy of 700 MeV, sending it through the hole towards particle A. When the...

If you have two sound sources emitting the same frequency and in phase with each other such that the emitted waves destructively interfere along the line containing the two sources, is the intensity at the points 0 or the sum of the intensity of each source independently?

I mean the force is applied, not naturally there. For example, a string is attached to the bottom of the cube and you pull the string parallel to the table. You apply that force yourself in some way.

Thanks jbriggs444 and dauto! That makes sense. After some algebra I see that W=\frac{F^2 t^2}{2\beta m} while translational kinetic energy is \frac{F^2 t^2}{2m}. I think you misunderstood my question. The point is that the force applied on both objects is the same; though, in order to obtain...

Consider a solid sphere and a cube of equal mass, both on a frictionless table. Now, you apply a force to both objects at the point of contact between the object and the table. Then the linear accelerations of both objects will be the same (since the same force is applied to the two objects of...

The Law of Conservation of Momentum states that the total linear momentum does not change in any closed system not subject to external forces. However, is it true that the momentum in, say, the x-direction does not change in any closed system not subject to forces in the y-direction? I feel...

If a spacecraft moving near the speed of light has a camera set up inside observing the people in the spacecraft , and the camera is connected to a computer on Earth so that observers on Earth could watch the video that the camera sends, what would the people on Earth see? Would they see...

In the classic problem of the induced EMF in a moving conductor (as in the picture above), the calculation for the induced EMF is as follows E=\frac{d\Phi_B}{dt}=\frac{d(BA)}{dt}=\frac{Bd(A)}{dt}=\frac{Bd(Lx)}{dt}=\frac{BLdx}{dt}=BLv. The derivation assumes that the magnetic field B is...

Homework Statement Consider the arrangement of two point charges equal in magnitude but opposite sign (+Q, and -Q), which are a fixed distance d apart. Can you find a location where a third positive charge Q could be placed so that the net electric force on this charge is zero? Homework...

Ohh, I believe I found the flaw, the shape is not a trapezoid because the distance traveled does not depend linearly on the time passed.