If you want to talk calculations, you are heading down a complicated path...
Do you know how an engine works? A 2-stroke or 4-stroke engine will make a difference as well. How many cylinders? There are a lot of variables to consider...
If you want to do calculations, I recommend a...
Homework Statement
Problem 9.7(a) of Goldstein, 3rd edition: If each of the four types of generating functions exists for a given canonical transformation, use the Legendre transformations to derive the relations between them.
Homework Equations
F = F1(q,Q,t)
p = partial(F1)/partial(q)
P =...
Hi G-reg,
You are really lost. You don't have enough data. A geosynchronous orbit simply means that the satellite remains fixed over a certain point on the surface of the planet. In other words, it's period is the same as the planet's period (length of Mercury's day). You need to obtain or...
Looks right, but your Latex is difficult to read. Your basically using Gauss' Law to find the electric field at points external to the cylinder. Your equation would be great if you knew the line charge density (lambda), but you don't. Use the relation that you used in your derivation to...
That makes sense, sure. But what is the definition of flux? We have magnetic field vectors going through the circular hoop in opposite directions; some go into the page, some go out of the page. Think about this, the net flux and symmetry.
I see what your saying and this makes sense now. Then this is the equation for zero net force:
qE = qvBsin(theta)
There is an infinite set of pairs (theta, velocity v) that would satisfy the equation. I was thinking for some reason that the velocity vector and the magnetic field were at...
I don't think that this is quite correct.
Consider a circuit with an applied emf, resistor, and inductor, where the current varies with time. If the current is increasing (di/dt > 0 ), then the self-induced emf opposes the direction of the applied emf. If the current is decreasing (di/dt...
Exactly. You are glimpsing at the symmetry involved in this problem. What is the net flux then? If we change the current with time, sure we change the magnetic field but what about the net flux?
Check out this link then:
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html
Then think about the connections between resistance, resistivity, and conductivity.
I don't understand why there is no text for the course. Is this a college-level course? There are many older...
Think about the magnetic field due to a long straight wire with constant current and relate this to the magnetic flux through the upper and lower halves of the semicircle. Since we have a changing current, the magnetic field around the long wire will change but what about the flux? Symmetry is...
No, I completely agree with you and I touched on the reasoning in a previous post. There is only one value of the velocity v that can result in a cancellation of forces. I would ask your professor if this is supposed to be a trick question and explain your logic for why this is so, b/c it...
I would suggest drawing the scenario using some chosen coordinate system.
For example, if you orient the parallel conducting plates to be parallel to the xy-plane and let the top-most plate be at the higher potential, then the electric field vector points in the negative z-direction. Since...
Let's work it out and find out.
The centripetal force is equivalent to the magnetic force. So we have
F_{cent}=\frac{m\left(vsin\theta\right)^{2}}{r} = \left|q\right|\left(vsin\theta\right)B = F_{B}
where vsin\theta is the component of velocity perpendicular to B. We can rewrite this as...