Recent content by Anisotropic Galaxy

I understand that professors are really busy and that they have far more important things to do than to advise students like me. So I'm not offended or anything (and if anything, I am grateful that he has given me a role in the project and is willing to advise me + write a LOR for me). But I am...

But I know that when I play with a wheely chair, that the chair moves [and that there is acceleration]. cesiumfrog said that I can press back into the chair without the chair moving, so this enables me + the chair to move.

Okay, sorry, my folk physics isn't that good. <---- Me on chair ----> Chair on me <-- Chair on ground --> Ground on chair Net motion of chair: <-- The net effect, then, is that the chair moves forward (since friction by ground on chair must strictly be equal to or less than the force I...

Okay, so I'm assuming that I have no contact with the ground whatsoever (and can only apply force against the chair, which in turn, applies force against the ground). Should the FBD look somewhat like this? I'm assuming that the analogy between my muscle power and the engine applies. <---- Me...

So I am a person sitting on a chair that has wheels. Now, the question is - can I push the chair when I am sitting on the chair and have nothing to push against? [other than the chair] Whenever i try to push against the chair, friction with the ground seems to pull it back. According to...

Note that I kind of subscribe to Dawkins' model. Also, the location of the file is at http://students.washington.edu/achen89/4_evolution2nddraft.doc . I can receive e-mail at hemaalpha@gmail.com. Thanks! Evolution is a comprehensive biological theory that draws much of its support from many...

3 pages double spaced. Can someone please comment on it before Sunday? That would be nice. Thanks! the file located at http://students.washington.edu/achen89/3_boundarylayer.doc . Please feel free to e-mail corrections to hemaalpha@gmail.com Human civilization (and biological phenomena) has...

Let A and I be as follows. A = [1 d] [c b] I=[1 0] [0 1] Prove that if b - cd != 0, then A is row equivalent to I I'm CLUELESS as to WHERE TO START. Please help me I tried simplifying to the matrix [1 d] [0 b - cd] And have no clue what to do next.

http://higgs.phys.washington.edu/phy121b/HW/light%20speed%20changes.pdf Above is what I need to do. So essentially, I have to show that in the new reference frame, that the new magnetic force will counter the old electric force. So then I have to use the equation of attraction due to a wire...

Due to Earth's rotation, a plumb bob may not hang exactly along the direction of the Earth's gravitational force on the plumb bob but may deviate slightly from that direction. (a) show that the deflection \thetais given by \theta = (\frac{2\pi^2R}{gT^2})sin(2L), where R is the radius of the...

A small cube of mass m is placed on the inside of a funnel rotating about a vertical axis at a constant rate of w revolutions per second. The wall of the funnel makes an angle theta with the horizontal. The coefficient of static friction between cube and funnel is u and the center of the cube is...

Hi, can someone please help me here? Prove that every nonnegative real number x has a unique nonnegative nth root x^(1/n). The problem gives a hint - existence of x^(1/n) can be seen by applying intermediate value theorem to function f(t) = t^n for t>= 0. But I still don't get it -...

or.. maybe not? L = mgcos27 and T = m(a_x) + mgsin27?

Does Should i switch the axis around, and then the Force of the thrust = (2.62cos27-gsin27)m and L equal to (2.62sin27+gcos27)m? sound right...?

But someone else got a different answer than me, so I'm probably wrong here...