Recent content by emtilt

Sorry, I have no experience with European schools.

They don't exist, as far as I know.

Don't know if anyone can use this, but I put together some resources on Astronomy graduate schools here: http://astro.ufl.edu/~emtilt/Graduate%20School%20Resources.html

What's LEDA?

How do I calculate the mean phase-weighted intensity magnitude of a variable star? I.e., if I have binned (magnitude) data points over the whole light curve, how do I change those magnitudes to intensities so that I can get the average intensity and then convert that value back to a magnitude...

Can anyone help with this? I forgot to mention that I need help somewhat urgently, before tomorrow. I've been staring at this for quite some time and have made no progress.

Wire with Current and associated fields - Urgent help needed Homework Statement A long wire of circular cross section with radius a carries a steady current i. Let the coordinate z denote position along the wire, \phi denot orientation around the wire, and r denote perpendicular distance to...

I apologize if this is the incorrect forum for this problem; I was unsure which would be most suitable because the problem is from a low level astrophysics class but is not precisely or exclusively astrophysics. Homework Statement For a gas of neutral hydrogen atoms, at what temperature...

I'm posting these as images because it would be difficult to type. If this isn't allowed, please let me know. I really need help with this before tomorrow, when I have a test. Any help appreciated. Homework Statement problem here The Attempt at a Solution I completed part 1 (solution here)...

Ah, thanks. I got 5.14, which was correct, by taking the net torque with an axis at the center of the stick. This allowed me to get the torque provided by the pivot by dividing the 13.368 Nm from my previous post by two. The result could then be divided by L=1.3 to get the force. Thanks again...

Not entirely sure what you mean. Gravity acts on the mass producing a torque of 13.368 Nm (from \alpha \frac{1}{3}ML^2 = \tau)...but I don't know where to go with that...

Homework Statement A uniform stick of mass M = 2.1 kg and length L = 1.3 m is pivoted at one end. It is held horizontally and released. Assume the pivot is frictionless. Find the magnitude in Newtons of the force Fo exerted on the stick by the pivot immediately after it is released. I...