all of it. I'm bad at physics.. ...I see a square root in there
x
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Comments(114):

[ 114 comments ]
What do you think? Give us your opinion. Anonymous comments allowed.
#60 - ChocolateWaffles (03/18/2013) [-]
Line one or two: Escape velocity.
Line three: Space vehicle's orbit may be determined.
Line four: Equation for the perigee radius Rp.
Line five: From which the eccentricity of the orbit can be calculated.
Line six: To pin down a satellite's orbit in space, need to know the angle from the perlapsis point to the launch point.
Line seven: The drag FD on a body is calculated by the equation.
Line eight: Mach number is given by.
Line nine: c is the acoustic velocity and is calculated by the equation
k is the specific heat ration equal to 1.40
R is the gas constant equal to 1,715 ft-lb/slug-R
Line ten: Thrust.
Line eleven: momentum, of a particle is the product of its mass and its velocity.
Line twelve: Second law of motion.
+2
#82 to #60 - tittylovin has deleted their comment [-]
#92 to #82 - anon (03/18/2013) [-]
[big]STEP OFF MY MAN![big]
#118 to #60 - vodwick (03/18/2013) [-]
You must see a lot of Sapiosexual action
#93 to #60 - anon (03/18/2013) [-]
***** , you just went full asian.
#73 - usernameerror ONLINE (03/18/2013) [-]
"What do rocket scientists say when they find something too difficult? 'Well... at least it's not like talking to women.'"
#78 to #73 - aerosol (03/18/2013) [-]
lol. Jim Gaffigan is awesome
User avatar #3 - traveltech (03/17/2013) [-]
...I see a square root in there
User avatar #74 to #3 - bothemastaofall (03/18/2013) [-]
The top equation can be used to calculate escape velocity of a body.
#130 to #74 - traveltech (03/18/2013) [-]
Sounds sciency
Sounds sciency
#13 to #3 - anon (03/17/2013) [-]
oh thats what SQRT means .... and i thought nasa was being naughty
User avatar #5 to #3 - lulchux (03/17/2013) [-]
I saw some numbers in there too.
User avatar #7 to #5 - traveltech (03/17/2013) [-]
not many though, mostly letters
User avatar #8 - sirbendalot (03/17/2013) [-]
I think every physics textbook should start with "In the beginning..."
#46 - comanderspy (03/18/2013) [-]
cunt squirts
#56 - neonthethird (03/18/2013) [-]
aeiou.
User avatar #85 to #56 - johnnybtrollin (03/18/2013) [-]
EVERYONE PLEASE STAND UP FOR THE MOONBASE ALPHA NATIONAL ANTHEM.

John madden... john madden... jooOOoOOoooohnn maddenn
repeat

www.youtube.com/watch?v=SVIyvh254aI
User avatar #71 to #56 - idoliam (03/18/2013) [-]
and sometimes y
+3
#83 to #56 - fivewordminimum **User deleted account** has deleted their comment [-]
#1 - brushz (03/17/2013) [-]
Processing...
Processing...
#2 to #1 - anon (03/17/2013) [-]
Posted 48 minutes ago...it appears brain.exe has crashed.
#4 to #2 - shadowspeaker (03/17/2013) [-]
shut up meg
User avatar #6 to #4 - lulchux (03/17/2013) [-]
THEY ******* DID IT.
#9 to #4 - anon (03/17/2013) [-]
I'm so glad that joke hasn't been used 10 billion times in the past three days. I don't know what I'd do if it started to get old...oh wait.
-1
#22 to #9 - sinceresandwich **User deleted account** has deleted their comment [-]
User avatar #25 - Protomix (03/17/2013) [-]
nope, biology major right here. I can tell you the exact process of cell mitosis and the reproductive cycle of every clade of animal, but none of this **** makes even slight sense to me.
User avatar #61 to #25 - Dairycow (03/18/2013) [-]
I learned cell mitosis and meiosis just last semester as a freshmen in high school... -_-
User avatar #62 to #61 - Protomix (03/18/2013) [-]
it was just the first thing that came to mind. also, you guys learned a very tangential and basic outline of those topics.
User avatar #69 to #62 - Dairycow (03/18/2013) [-]
ask me "hard" question then about cell mitosis or something and i promise i won't search it up on google, ill be truthful about it if i know it or not..
#75 to #69 - psychrophile (03/18/2013) [-]
How is the mitotic spindle broken down? What does this do?
User avatar #26 to #25 - teranin (03/17/2013) [-]
right there with you, microbiology major and I suck ass at some physics.
User avatar #30 to #26 - Protomix (03/18/2013) [-]
yay, biology friend. come, let's shun the lesser sciences.
#38 to #30 - teranin (03/18/2013) [-]
shunnnn! shuuuunnnnn!
-1
#34 to #30 - olicoooombs has deleted their comment [-]
User avatar #52 to #25 - mlpokeyuan ONLINE (03/18/2013) [-]
well then, how do lizards sex?
#90 - snaresinger (03/18/2013) [-]
This is going to sound arrogant, but hear me out.   
   
People need to stop acting like this is scary. This is why many educational systems are failing. People set up physics to be this big, horrifying, math version of brain surgery, and it totally is, before you actually learn what it means. But once you actually learn what all the terms mean, it's literally the most universal, straightforward thing there is. I mean come on. You see some weird Greek symbols and 			****		 in there, but all that takes is for someone to tell you what they mean. Do you see a single mathematical operation that you didn't learn by high school? I certainly hope not. And seeing and feeling those equations in action just makes it easier.   
   
I really am sorry for people that legitimately don't get it, because you have been intimidated and let down by the world at large, and that's a damn shame. You should be angry, and you should demand that the problem be fixed, because voices are important.   
   
Sorry for the long rant, but I really think scientific and mathematical education is much easier than culture makes it appear, and if that was fixed, the world would be much better off.
This is going to sound arrogant, but hear me out.

People need to stop acting like this is scary. This is why many educational systems are failing. People set up physics to be this big, horrifying, math version of brain surgery, and it totally is, before you actually learn what it means. But once you actually learn what all the terms mean, it's literally the most universal, straightforward thing there is. I mean come on. You see some weird Greek symbols and **** in there, but all that takes is for someone to tell you what they mean. Do you see a single mathematical operation that you didn't learn by high school? I certainly hope not. And seeing and feeling those equations in action just makes it easier.

I really am sorry for people that legitimately don't get it, because you have been intimidated and let down by the world at large, and that's a damn shame. You should be angry, and you should demand that the problem be fixed, because voices are important.

Sorry for the long rant, but I really think scientific and mathematical education is much easier than culture makes it appear, and if that was fixed, the world would be much better off.
User avatar #91 to #90 - SuperBobbis (03/18/2013) [-]
I totally agree with you, 100% whole-heatedly. Mainly because when I wanted to do physics and the higher level maths as subjects last year for grade 11 (and by extension, into year 12-University), but my brother who was doing it then, said I shouldn't do it because of my ADHD, so I didn't. But now I see what they did when I wanted to do it, a lot of it seems quite simple and easy. So, what I've done since then, is pretty much what you've said, I've told people to just give it a try for a semester. It's working, for my school at least.
User avatar #95 to #90 - ludislavonac (03/18/2013) [-]
Yeah I agree with you, even though it has been a few years since high school and I don't study anything related to physics I still remember what some of these symbols/terms mean. It isn't really that hard if you got someone who can explain it really well
User avatar #107 to #90 - Dropkicksxxx (03/18/2013) [-]
I agree, juat not with that I don't kniw it because I was let down or scared of it. I took the health tract and metal shops. I may not know this, but I can take a few blank pieces of metal and make damn near anything. I've made two if my own guns now, some people just learn other a things well.
User avatar #132 to #107 - snaresinger (03/18/2013) [-]
Of course, everybody has their own strengths. I'm actually not a physics student anymore, I'm a music major at university. I just don't think people should be so intimidated by science and math. It leads to social divides, inefficiency, and loss of progress. But hell, I'd love to have your talent.
User avatar #108 to #107 - Dropkicksxxx (03/18/2013) [-]
Sorry, learn other things well*
User avatar #105 to #90 - sebthebrony (03/18/2013) [-]
I was never taught any of this in school. We never even learned anything, we left off at dopler's effect.
And I get what you're saying, but I think there's a lot more things out there to learn, to make. Art can be found in prety interesting places, not just Physics, and people shouldn't really know everything if they can know other things
#99 to #90 - anon (03/18/2013) [-]
So what is the maning of that large **** of numbers ?
User avatar #131 to #99 - snaresinger (03/18/2013) [-]
It's actually a bunch of set equations-- equations that physicists have figured out always apply in nature, and can be used in various situations. For example, Fg=G(m1+m2)/rr^2. Seems intimidating, right? It's not. It basically just says that the force of gravity (Fg) can always be calculated by plugging in the universal gravitational constant (G, a number that you memorize), the mass of two objects (M1 and M2) and the distance between their centers (r^2) and doing the math. The math is just basic operations-- not too hard, right? That's all that stuff is.
#103 to #90 - icefried (03/18/2013) [-]
The farthest they taught us math in highschool was logarithms and that was the final week. Never had a math class after that again.
#112 to #90 - anon (03/18/2013) [-]
Mister, I just wanted to say you're completely right. I was failing math classes in elementary and middleschool. Because I was literally scaring myself into being unable to understand new material. In 8th grade, when a teacher taught me to not fear the problems anymore?.. everything started to click. Now I'm in highschool and I'm in AP everything, and my math teachers are throwing books at me left and right because I'm just burning through everything they hand me. If you go in with a can-do attitude, you have a much higher rate of success if you have someone explain to you the basics of what's needed. When you're going "Oh I don't know this.. I can't do this.. I'll look stupid.. It's impossible!" You really set yourself up for failure.

[smallTL;DR I'm a math and science nut and if you just keep a positive attitude you can get somewhere.[small]
#76 - deerdave (03/18/2013) [-]
Sneaky batman!
Sneaky batman!
#102 - tempman (03/18/2013) [-]
Reminded me of this for some reason.
#35 - sloths (03/18/2013) [-]
i found it to be funny
#41 - sirbutterballs (03/18/2013) [-]
SQRT hurhurhur. I'm 			*******		 stupid.
SQRT hurhurhur. I'm ******* stupid.
User avatar #121 - SuitUp (03/18/2013) [-]
Here you go:

First two lines is deriving the escape velocity from kinetic energy and gravitational field equations.

Lines 3 - 6 is working out the characteristics of the orbit of the satellite.
- 3rd: Orbit velocity
- 4th: Application of kepler's laws to work out the perigee radius (Closest distance during orbit. As opposed to apogee which is the furthest.)
- 5th: 'e' is the eccentricity of the orbit, how much it deviates from a perfect circle.
- 6th: theta is the angle between the point the satellite is launched from and the point on the planet that corresponds to the perigee point. This angle finishes characterising the orbit.

7th Line is just the drag force on it.
8th is standard formula for mach number = speed of object/speed of sound in the same medium.
9th Calculating the speed of sound from specific heat, gas constant and temperature. (Satellites usually aren't in absolute space so it isn't in a vacuum.)
10th line is the thrust that needs to be produced.
11th gives the momentum of the satellite.
Lastly is Newtons 2nd law, aka F=ma=dp/dt the rate of change of momentum.

SCIENCE!

#97 - AWalrusFirst (03/18/2013) [-]
Comment Picture
#11 - whocaresbro (03/17/2013) [-]
I don't understand how you mixed up the alpabet with math that bad!
User avatar #81 - semilunarknight (03/18/2013) [-]
These all just look like set formulas...also, that ******* batman, almost missed him
#50 - lamarisagoodname (03/18/2013) [-]
Anyone wanna explain to me the 2nd formula? The one for v2

Much appreciated
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