Recent content by phyvamp

Homework Statement Monochromatic electromagnetic radiation of wavelength λ nm falls on double slits, creating a diffraction pattern on a screen L m away, Suppose now that the distance between the slits begins to increase at a constant rate: dd/dt = x μm/s. Assume that everything else...

Thank you for the reply. And Yes, I was trying to use Ampere's law. But why it is not applicable here? I though electron is moving in a circular path, so it supposes to be symmetrical? And when you said "You now have a current loop of known parameters (i and r) centered on the nucleus", how do I...

Homework Statement In an atom: suppose one electron orbits the n proton nucleus at radius r . Find the magnetic energy density, in J/m3, at the center of the atom due to the motion of this electron. NOTE: You can ignore the effect of other electrons in this atom. Homework Equations...

right? thank you for the explanation, this is exactly what I feel confused. In the question, it stated "magnitude bT and running east to west" I thought the direction of B is from E-W, in other words, it points to the right, but actually it is not. It is either inward or outward, right?

right hand: thumb points to south(down) forefinger points to west (left) and the middle finger is inward, so the force is inward?

Homework Statement A straight wire (length Lcm, mass mg) lies horizontally on top of a sensitive scale. The wire is oriented so it runs north-south, and it is part of an electric circuit that includes a battery and an open switch. There is a uniform magnetic field everywhere, magnitude bT and...

thanks again for the explanation.

thank you for the explanation. So magnetic field will not change the magnitude of the velocity generally? or this question just a particular case since acceleration is at right angles to the motion?

Homework Statement Suppose a subatomic particle of mass m kg has kinetic energy K.E. a nJ and is moving southward toward a vertical wall. When the particle is distance d cm from the wall a magnetic field is turned on: it has magnitude b T and points upward. The particle turns westward so it...

thank you!

thank you for your explanation. is it electric potential? electric potential on sphere 1 must be equal to electric potential on sphere 2?

the switch is between spheres, no battery present. So I see I was wrong. what I confuse is it states "the spheres are very far apart, so they do not affect each other's charge distribution." but charge only place on sphere1, so there is no charge on sphere2. I only need to figure out V1 for...

Homework Statement 1) Two solid conducting spheres have radius r1 = 3 cm and r2 = 42 cm. The two spheres are connected by a thin conducting wire. Assume: - the wire is very long and thin, with negligible surface area, so it does not affect the capacitance of the system. - the switch is...