Recent content by mikemartinlfs

Disregard; I think I answered my own question; Lenz's Law states that the induced EMF (and thus, current) would act in such a way to counter the motion of the current in the wire. Based on the right-hand rule, the magnetic field lines around the straight wire would be clockwise, meaning the...

Homework Statement A circular loop of wire is placed next to a long straight wire. The current I in the long straight wire is increasing. What direction is the current that's induced in the circular loop? Homework Equations The Attempt at a Solution I'm aware that the answer is clockwise...

This is a diagram that's like the one given. The space between the + and - charges is 1 mm. They're all in the same plane. Like I mentioned in the OP, the positive four charges are on the inside of the circle with the corresponding - charges on the outside. The question was, what's the flux...

Homework Statement A circle, centered on the origin, has a radius of 1 mm. At each "pole" (1,0), (0,-1), (-1,0), (0,1) is an electric dipole. The positive charge of +10 microCoulombs is inside the circle, the negative charge of -10 microCoulombs is just outside the circle. What is the...

Thanks again for your help; I was getting incredibly frustrated at the seemingly cryptic feedback from the website. You've been amazing :)

Let me ask this: if someone was observing this interaction from a "stationary" position, are the two electrons moving at an equal speed? And the only thing that causes one to "move faster" is the specific reference frame we're currently at? So that would mean that our reference frame is...

I suppose I'm still getting hung up on the concept of the reference frame and how that affects the question; your explanation shows that the CoM "reference frame" would be one in which both are moving at the same speed. If their speeds differ, you're not in the "CoM Reference Frame", is that...

This is a multiple choice question that, after one incorrect attempt, I got correct; however, I want to actually understand what the explanation means. I'm hoping someone here can help. Homework Statement Two electrons, each with mass m and charge q, are released from positions very far from...