Recent content by myshadow

I asked it on Math Stack Exchange and they figured out that + is probably a test typo and suppose to be a divide symbol, which gives an answer of 3/8. Sorry for the trouble. Thanks.

Thanks for the reply. Yes I typed it correctly. That's the same answer I got, but it's none of the choices. It's a practice exam for entrance into Medical School (I'm helping someone out with the math part) so I thought I was overlooking something, but I guess the practice problem is just wrong...

Homework Statement The problem is from an NMAT Practice Exam. The problem is multiple choice. 3^(n+2)+(3^(n+3)-3^(n+1)) = ? a.)1/(3^(n+1)) b.)1/(3^(n+2)) c.)3/8 d.)1/3 The answer given is 1/3, but I don't know how they got that. Homework Equations noneThe Attempt at a Solution My...

So you have y=1/x. When you take the derivative, you get dy/dx=-1/x^2, which can be written as dy=-dx/x^2. Then substitute for all x's.

I'm pretty sure that the answer is the same distance at the same time. Both tubes have the same acceleration throughout their motions. I don't think it matters that they're rolling. The solid one has more potential energy because of its greater mass, but in the equation for conversion of...

I think he's saying that the solution is messy because you can't write the solution in terms of elementary functions (i.e. finite number of terms using exponents, trig functions, constants, etc).

u =\frac{1}{ln(x)} and dv=\frac{1}{x^2}\,dx\ are the correct forms. The reason for this is that integration by parts is ∫udv = uv-∫vdu. Thus, when you multiply u and dv together it has to come out to the original integrand.

Eratosthenes was a Greek mathematician who calculated the circumference of the Earth in 240 BC by using shadows and geometry. That's already ridiculous, but then I read he also calculated the tilt of the Earth! How did he do that? This guy was definitely a time traveller from the future. lol.

Could you please elaborate? From one reference point, A collapses the system and as a result B has a defined spin. From another reference point, the measurement of B seems to happen first and collapses the system. As a result, A takes a defined spin. I don't see how the instantaneous action does...

So causality can be violated?

Wow. That's deep stuff.

Could you elaborate? Since the measurements are being taken at the same time with respect to the reference frame of the source, aren't the spins of both the particles still indefinite at the instant before the measurements? As a result, isn't there a probability that the particles will have the...

Let's say you have entangled particles emitted from a source. What happens if you measure the spin of both entangled particles simultaneously with respect to the reference frame of the source? Would the spins measured still be opposite (anti-correlated)? Would you even get a definite...

Nah, they were definitely advanced placement courses. Honors classes was junior high stuff. I took an AP english course and after that my advisor kept telling me to take the other ones. College credit was one of the main advertising points that was always brought up. I just never knew I had to...

I was talking to an acquaintance the other day and I found out that I had to take an AP test to get college credit for high school AP courses. The only thing is I'm finding this out after having already graduated from college two years ago with a BSME. I took a bunch of AP courses back in...