Recent content by EJC

Suggestion based on personal experience: PF is a great place to get career/school guidance. I know because it worked wonders for me. However, the one issue I remember having is there being a proper forum to start one of these threads in. It seems like a small issue, and it probably is, but...

This summer internship is essentially my only experience outside from my own institution, and the professor I'm doing research under there is one of the professor I already mentioned counting on for a letter. But thanks for your reply! I will move forward by asking all three of my main...

I'm applying to grad schools and my undergrad has a very small Physics department - only 3 professors. I am having at least 2 of them write me letters of reference, but in regards to my third letter, should I ask the other professor, who I've only had a few classes with, or should I ask my...

I took the exam 5 days ago. Do the writing section. It's not hard.

Thanks for the advice!

I should update this by letting you all know that I ended up going with a 2015 15" Macbook Pro w/ Retina 16GB RAM 2.2Ghz quad core i7 and Intel Iris Pro Graphics. It should be arriving soon.

Right. It becomes convenient in certain circumstances to just represent sqrt(k/m) as omega because in certain applications (i.e. SHO) it appears all the time, and it has units of angular frequency. It's the same concept as writing F instead of ma... they both have units of force, but one is...

If F=ma and F=−kxThen ma=−kx (by equating the forces.) Which can be also written as ma+kx=0or a+kmx=0Now if x is displacement, differentiating once with respect to time will give you velocity of the spring and then differentiating again with respect to time will give acceleration. Displacement...

http://hyperphysics.phy-astr.gsu.edu/hbase/shm2.html

It's been a long time since I've done these - but if you take the moment about A, forces CH and FG will disappear, and all you will be left with is EG and P... right? I was never good at the method of sections, although it can save you a bunch of time.

To OP: When I first began learning QM, my professor put it very simply. It went something like this, although I'm going to paraphrase. "Even those who think they understand quantum mechanics don't understand quantum mechanics. The best way to start is to simply do quantum mechanics, grind the...

Sort of. A superposition means that the individual electrons actually have spin both cw and ccw, and when you measure the spin of the electron, the wave function of the electron, which was a superposition prior to measurement, collapses to be a spin eigenstate. Look up the Projection Postulate...

Welcome!

I do a lot of modeling in Maple. I recently bought a Macbook, and may run Windows through a VM and use Maple inside that until the eventual day that I buy a license for Maple for my Mac. Anyone have any insight on this? I've looked into dual booting and VMs, and since Maple (and occasionally...

Thanks for the implicit casting of doubt, but, aside from the PGRE score (which I haven't yet taken), I do.