Recent content by TALewis

You won't get kicked out of college for having a bad semester. You might get put on probation for a while, and might have to retake some courses, but your life will not be destroyed for the next two decades. You are not the first person in history to have a bad semester in college. As far as...

That is quite the shame, since the audio component is half the experience.

In order to better see the ghost, you should lean in close to the screen and turn the volume up.

The work-kinetic energy theorem states that the work done on a particle equals the change in kinetic energy of the particle. From that statement, you should have enough information to answer your question.

Tieing a vote to a person is an extremely bad idea. A large reason why we have a secret ballot is so that you can't be threatened or harassed or coerced into voting for a particular person. Since it can't be proven who you voted for, you are free to vote for whomever you wish.

I can't imagine going through life without being at least passively familiar with basic kinematics, dynamics, and conservation of energy/momentum. It would be like not knowing that plants make food through photosynthesis, and that chlorophyll makes them green. A person that doesn't know these...

*Jedi mind trick* You don't need to use a GUI... *waves hand* LaTeX code will be just fine.

I agree. To me, "zero gravity" and "microgravity" both imply that gravity somehow disappears in orbit, which is not the case. "Weightlessness" is also kind of a misnomer, since the astronaut orbiting the Earth is still acted on by his weight of mg, he just doesn't "feel" it. Free-fall is...

Gravity is a body force. If we consider the local gravitational field to be uniform, then Earth's gravity pulls on each atom of my body evenly. Because of this, I cannot feel gravity directly. What makes me feel so heavy is the ground pushing up on my feet. Or the chair pushing back on my rump...

This PDF might have a solution to overriding the default equation numbering: http://www.ee.mu.oz.au/staff/cantoni/docs/amsldoc.pdf Section 3.1 says that with the amsmath package (\usepackage{amsmath}), you can provide your own equation number or symbol with the \tag{label} command.

An astronaut orbiting the Earth is most certainly affected by gravity. The gravity field in low Earth orbit is only a little bit weaker than that on the ground. It is in fact the gravitational force that keeps the astronaut and his vehicle in orbit. Imagine swinging a ball on a string around...

I use Debian. People say it's difficult to install, but that's probably just because it doesn't have a pretty graphical installer. If you can hit 'ENTER,' you can install Debian. It should be even easier to install now with the upcoming "Sarge" release. Once you have Debian installed, it is...

To use \includegraphics, you probably need to put \usepackage{graphicx} in the preamble of your LaTeX document, right after the \documentclass line. If you're compiling your documents with the latex command, you need to convert your pictures to encapsulated Postscript (eps) before including...

Here are a bunch of old Apogee / 3D Realms games: http://www.3drealms.com/downloads.html Just looking at the list brings back some memories.

In my high school Calculus, we memorized a unit circle diagram, like this one: http://www.math.lsa.umich.edu/~zacht/teaching/unit_circle.html The ordered pairs correspond to (cos(t), sin(t)). Basically, all I have to remember is that the cosine of 60 degrees is 1/2, and then I can...