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/sci/ always boasts about its alleged high levels of intelligence. Now's the time to prove it. http://www.iqout.com/start.php Post scores.

What do you guys think of this guy? Do you enjoy his format? Inb4 people call him simplistic He's obviously a great educator, has a original entertaining style and other qualities

http://www.brown.edu/Research/electronbubble/publications/papers/electron%20bubbles_03.pdf What does /sci/ think?

If the suns course runs east to west why are sundials semi circular instead of rectangular or something?

Why is (A-B)^2 = A^2 - 2AB + B^2 ??

Is accounting /sci/ approved?

The mantis shrimp whacks things with a force of around 60 kilograms, or 120 lbs, with each "punch". Given the shrimps low mass, why doesn't the shrimp shoot backwards or something? If it's putting out 120 lbs of force in one direction, shouldn't there be Newtonian principles at work? Yes, I'm stupid, don't insult me to much please :3

I'm having trouble with my science homework. I was hoping any of you could give me a hint how to approach this. Pic very much related. It's illustration of the assignment. B and A resembles where the tires meet the road. There is 1,54 meters between A and B. G is the center of mass located 0,5 meters over the ground. The horizontal plane between G and B is 0,7 meters. The biker and the motorcycle weighs 290 kiloes in total. I have to calculate the forces that affect B. Please help a student, who have been trying to figure this out for hours.

Any thoughts on Everyday Math? I am waaay too old, but some of you whippersnappers must have used it. One of my little girls will be using it this year. Conservatives seem to think it's an abomination and perhaps a communist plot. It doesn't look so bad to me, except it seems to use "group work" a lot, and I think that's pretty much a waste of time for any kid with some ability. Thank you sincerely for any insights. Now get the hell off my lawn.

ricin poison does it biodegrade if left for a long time will it lose its toxicity?

Hey, I'm reading "Mathematical Methods in Quantum Physics" by Gerald Teschl and he uses some function called \chi\Omega_n, googling chi omega only gives me some stupid fraternity. Anyone know what this refers to? TLDR; \chi\Omega_n WHAT MEANS?

Okay, question time. So I know that dB is a representation of signal gain/loss without reference and that dBm is with a referance of 1mw. Now the free space path loss equation( dB = 20log10(d(km))+20log10(f(Mhz))+32.45 ) calculates the drop of signal over a distance at a frequency. So if i calculate a drop in dB how would I calculate the signal power in dBm provided I know the output power of the transmitter.

So ive have a mechanics test in the morning, on statics, ive haven't done statics since first semester ( as this is a repeat exam) and i was wondering if any one if anyone in /sci/ could help refresh me how to do these questions. I'll be dumping a few questions that are likely to come up tomorrow >seriously regretting not doing physics in school. >pic 1/7

after 5 years of working i returned to school and physic for beginners is quite a challenge so i just ask if any of you could help a car with 80 mph passes a gas station. at that point another car starts from that gas station and speeds up to 100 mph. when will the second car reach the first one?

why isn't locale theory taught more often in topology courses? because it's pointless

Will try to post those daily at 9pm UTC / 4pm EDT

What's a good real analysis refresher? I received a masters in mathematics a little bit over four years ago, so a book like Steward (or whatever it was called) isn't really what I have in mind. Something quick but thorough, please. Thank you.

I was making pic related, and when I lit the alcohol, it was burning pure yellow until it burnt out? Why is that?

what the fuck, /sci/?

Hey /sci/... I tried google but i couldn't find anything about how Cauchy discovered his Cauchy Distrution and how Lévy discovered his distribution. Can anyone help me?