/sci/ - Science & Math

>>5875072
>study Japanese
>ex gets a tattoo
>see on facebook
>Her description
"This means everlasting love in Japanese"
>mfw it's ご飯と豆
>rice and beans

>Ask friend if he wants to go to waffle house with me
>He says sure, and goes to get money.
>Get to his house
>Pick him up
>Drive there
>Eat delicious waffles
>Waitress gives us our bill
>I pull out my wallet
>He pulls out a bigass bag of coins
>My fucking face
I just ended up paying for him and taking the bag of coins from him in exchange.

I've not taken him back since then.

>>5545951
There was a documentary on the BBC recently that covered asteroids.
Breaking things down, the rather big, apocalyptic sized bastards are the ones we're able to reliably detect. The smaller, comparatively less deadly ones are really hard to find, usually until it's too late. Some time in 2008, one such small 'roid crash landed somewhere in the nubian desert: http://www.thefreelibrary.com/The+Earth-bound+asteroid+scientists+saw+coming.-a0199553062
According to the documentary, it was first tracked less than 16 hours away from Earth.
Nothing important got wrecked, but were these things to fall on a city, there'd be very little left.
The scary thing is, we don't know when they'll turn up half the time.

no tears - only dreams now

Nationalism

sci, could use some help understanding some basic physics problems.

first one loop-the-loop trick for a small car. If the car is given an initial speed of 3.72m/s what is the largest value that the radius can have if the car is to remain in contact with the circular track at all times?

I think I set v^2 /r = g then solve for r, but I keep getting the wrong answer, (i get ~1.41 m)

another

A swing is made from a rope that will tolerate a maximum tension of 984 N without breaking. Initially, the swing hangs vertically. The swing is then pulled back at an angle of 66deg with respect to the vertical and released from rest. What is the mass of the heaviest person who can ride the swing?

this one I don't even know where to start
pls /sci/ you're my only hope

>that feel when someone will prove the Riemann Hypothesis before you

>>4846879
That's what I tried to say, my lacking english skills failed me again.
Maybe time travell is just creating different parallel dimensions and that makes it possible to change stuff and when you travell back to the time you came from, you'll either be in an unchanged universe or in the changed paralleluniverse

I almost got mad.

>>4546015
Oh, and to anyone that thinks I'm being over-dramatic with this:

At the end of the year, the staff gave each student a special certificate for passing 7th grade, each one catered to each student.

The award assigned to me at the end of the year by the teachers?

The "0.999...=2" award.

>female math profs

How does this even happen?

>class is done with her examples before she's even a third of the way through
>even when she's done she's made like 3 mistakes and her answer is way off
>class has to correct her and she just goes "oh okay well that's what you should've got guys"
>slow as fuck with figuring anything
>shit at wording problems

And it's been this way with EVERY SINGLE FEMALE MATH PROF. Why the fuck do they even exist, girls clearly can't into math.