Recent content by mm2424

Thanks, that makes sense!

Does anybody have any insight into what I'm doing wrong here? I'd appreciate any and all help :).

Homework Statement What is the maximum kinetic energy of electrons knocked out of a thin copper foil by Compston scattering of an incident beam of 17.5 KeV rays? Assume the work function is negligible. Homework Equations Δλ = h/mc (1-cosθ) The Attempt at a Solution I reasoned...

I'm still missing something, haha. I'm not sure what you mean by shift the arrow to the middle of the picture, and I'm not clear on where Rcosθ comes from. Is it some type of trig relationship involving arcs?

Homework Statement A lens with radius of curvature R sits on a flat glass plate and is illuminated from above by light with wavelength λ (see picture below). Circular interference patterns, Newton's Rings, are seen when viewed from above. They are associated with variable thickness d of the...

Homework Statement Two rectangular plates (n = 1.60) are in contact along one edge and separated along the opposite edge (see figure). Light with a wavelength of 600 nm is incident perpendicularly onto the top plate. The air between the plates acts as a thin film. Nine dark fringes and eight...

Sorry, but this particular subject material is largely over my head. I can't really follow what you suggest I do. Is there another way to look at it? Alternatively, is it always true that one period includes 4 cycles, such that you always divide the period by 4 to find the time it takes to go...

Oh, I see, thanks. Can you explain why we have to divide by 4 as the final step?

Homework Statement The total energy stored in an LC circuit is 2J. The inductance is 10^-2 H and the capacitance is 100 μF. What is the time interval between a maximum current through the inductor and a maximum potential difference in the capacitor?Homework Equations T = 2∏/ω ω = √(1/LC)The...

Thanks! Is there a method for figuring out the angle B makes? I was fine when it came to finding the correct angles in kinematics, but I consistently choose the wrong angle in magnetism questions. There might be some geometry rule I've forgotten or something.

Homework Statement The attached figure shows, in cross section, two long parallel wires that are separated by distance d = 18.6 cm. Each carries 4.34 A, out of the page in wire 1 and into the page in wire 2. In unit-vector notation, what is the net magnetic field at point P at distance R =...

Homework Statement A long wire carrying 100 A is perpendicular to the magnetic field lines of a uniform magnetic field of magnitude 5.0 mT. At what distance from the wire is the net magnetic field equal to zero? Homework Equations B = iμo/2∏R The Attempt at a Solution I...

Thanks for your reply. I'm still super confused with this material and apologize for the awkward wording. I see that there is no charge buildup at points a through d. However, is it ok to say that the magnitude of the moving charge is the same as the magnitude of the charges that accrue on the...

Homework Statement I've attached a photo of a circuit with a battery and three capacitors. I have a qualitative question about the problem. In the diagram, four points (a through d) have been labeled. The problem asks how many electrons pass through the wire at those points. Is it ok to make...

Homework Statement Two parallel plate capacitors, 6 microfarads each, are connected in parallel to a 10V battery. One of the capacitors is then squeezed so that its plate separation is 50% of its initial value. Because of the squeezing, (A) how much additional charge is transferred to the...