all of it. I'm bad at physics.. ...I see a square root in there
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all of it

I'm bad at physics

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Views: 60498
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Submitted: 03/17/2013
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User avatar #3 - traveltech (03/17/2013) [+] (5 replies)
...I see a square root in there
#60 - ChocolateWaffles (03/18/2013) [+] (4 replies)
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.
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
#90 - snaresinger (03/18/2013) [+] (10 replies)
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 shit 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 shit 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.
#73 - usernameerror (03/18/2013) [+] (2 replies)
"What do rocket scientists say when they find something too difficult? 'Well... at least it's not like talking to women.'"
#1 - brushz (03/17/2013) [+] (7 replies)
Processing...
Processing...
#56 - neonthethird (03/18/2013) [+] (3 replies)
aeiou.
User avatar #25 - Protomix (03/17/2013) [+] (9 replies)
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 shit makes even slight sense to me.
#65 - agooodname (03/18/2013) [+] (1 reply)
#41 - sirbutterballs (03/18/2013) [-]
SQRT hurhurhur. I'm fucking stupid.
SQRT hurhurhur. I'm fucking stupid.
#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
User avatar #121 - SuitUp (03/18/2013) [+] (1 reply)
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!
#50 - lamarisagoodname (03/18/2013) [-]
Anyone wanna explain to me the 2nd formula? The one for v2

Much appreciated
User avatar #28 - coustify (03/17/2013) [+] (3 replies)
Since when was the symbol for New Phyrexia involved in physics?
User avatar #31 to #28 - vexaton ONLINE (03/18/2013) [-]
That's phi...
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