I'm not sure, but until someone better at physics responds, this'll probably tide you over:
When the water is going forward, I guess it's pushing the hose/person holding it backward
the momentum going forward is .6kg*25m/s, and you get the force by taking the change in momentum over the...
I'm trying to decide if it's worth my time to make my undergraduate GPA super high
My cumulative won't get much higher than 3.2 even if I get 4.0 for the next two years, so I won't be able to get into any honors societies, and the only reason I can see to bother temporarily memorizing every...
Don't worry; I figured it out on my own
Man, this site is so crappy for getting help on anything specific
Well, it's no big deal
If someone comes across this in the archives or something and wants me to tell them how to solve the problem, they can drop a line to killamarcilla@bigpen.us
So I should have taken ds/dr ds/dtheta instead of the other way around to get the right sign, and I should have taken r dr dtheta rather than just dr dtheta, but even when I do that I still get the wrong answer
hmm.. I can't figure out how to get this one right without just using the...
Yo guys, I'm stumped on how to parameterize this surface and then compute an integral over it
I'm supposed to compute \int\int_S \vec{r} over the surface formed by the x-y plane and z=4-(x^2+y^2), but I don't know to put it together and do it
(No matter how you work with x and y, z will...
The math isn't that tough
Well, it's not tough for me, and it's less tough than what you need for a fancy physics degree and way less tough than for a math degree
I think I'm probably just going to end up being a professional programmer since I'm so much better at it, but I'll be a...
0hh0, how intriguing
At the very least, his advice about appreciating and preserving life, liberty, and the pursuit of happiness warrants some merit
Stupid mad cow disease.. although I guess that I shouldn't be eating beef anyway, if I want to lose weight
It'll probably be 2005 by the...
OK, I think I have the formula:
y = mx+b*ln|ve^(bt)-v+1| -ln| (1-v)/e^(bt) + v / ( P*e^(r*t) )
.. oh, wait, that's just a bunch of useless gibberish
sorry
Man, I was pretty convinced that people will always be fine and the environment won't get totally screwed up, but I was reading a biology textbook earlier today and it sounds like we're screwing things up pretty nicely
All sorts of cropland is being destroyed by overusing it and not letting...
Well, my friends.. if I get banned, know that it was fun (and I'll be back with a different name)
So a Physicist, a Mathematician, and an Engineer are all asked to prove that all odd numbers are prime
The Physicist says "1 is prime, 3 is prime, 5 is prime, 7 is prime.. Given the...
Man, that makes the Bible sound almost embarassingly bad.. like if God ever showed up and we said "Hey, we got your book!" he'd see the nonsensical rambling scribbles and be disgusted, but humor our pathetic efforts
well, I dunno, maybe if the guy's bending over.. wait, I was thinking his back would be curved, but then if you try to lift weights like that you'll just tear yourself apart
I've never lifted serious weights.. the most I ever power-cleaned was like 100 pounds, since I never went to a real gym...
Man, one time I read a really awesome short story wherein some guy did a sci-fi metallurgical survey from Earth of the Moon, and discovered that right under the surface, it had huge insane deposits of gold and high-quality uranium, and there was a whole new private space race that made getting...
I think the thing isn't perpetual motion, but rather turning useless random (such as heat) energy into useful work
If you can do that enough to overcome the friction in your device, you're set, and then frictionlessness is just a calculational convenience
David Blaine??
Yo, d00dz, any of you familiar with David Blaine's levitation act?
Assuming it's not just a cheap camera trick, any ideas as to how he might do it?
My friend noticed that it's always shown to people or the camera from one specific angle, if it is an illusion somehow, but...
My professors can never remember where all the "c"s go when they're writing out relativistic equations, because they all work in their day-to-day lives in a system of units where c, m0, e0, h, and many other constants are 1
I think that to anyone these units would be useful, they'll use them...
I believe that the trick here is that you're doing work on the treadmill since your feet are pushing down on it, they're moving along, and work is a force through a distance
Or maybe you could look at it like it's the same as walking up a stationary hill, relatively
Maybe I don't know what...
h0 h0, I clicked this thread expecting to quickly solve your problem, but if you're working with gravity waves, your Physics skillz are likely much l33ter than mine
If I got handed a problem like that right now, I'd look around to see if there's a formula relating the wave's energy to its...
Oh man! So THAT'S why some media are transparent to light! (by the photon theory)
That'd explain so clearly why heavy elements will stop high energy photons better than light elements (that, along with plain ol' density..)
Anywayz, the frequency stays the same because the time between one...
Yo, d00ds, my Physics book mentions the concept of Heat Death (All the energy in the universe going to an unusable form) but says that it might not be valid if the universe is bounded in certain ways
Does that just mean that if the universe hits a Big Crunch, it won't experience Heat Death...
I dunno, every group on the show got significantly higher than average, with only a little bit of variation..
You know what's kind of funny? If a group of people is told that they'll do poorly on a test because they're inferior to someone else, they almost always do poorly
I saw this...
Oh, right, I think I know what you're talking about now
Sorry, I had Math 126 about two years ago, and haven't used most of it since then (except for the geometric series approximations)
h0 h0, I look like quite the f00l now
Wait, wait, wait, is group theory just that mathematical dealy wherein you count numbers by grouping them in various ways, like if you want to prove there are more numbers between 0 and 1 than there are integers greater than zero?
Oh, right
So you just have to put a strong magnetic field in there, and the plasma's positive cores will go one way, and the electrons will go the other way, but it's all good so long as it doesn't touch anything
I have a job helping a guy who's head of the University of Washington's...
Yeah, you did
And it said wasn't valid at all if you're under 18 years old or over 70
They also said not to use the test to diagnose any medical conditions, so it might not be a top-notch test
I think entropy would hold true anywhere that the laws of statistics do, since that's all entropy is, unfortunately
Ordered states are less numerous than unordered ones, and with random actions, you're more likely to end up in a likely state than an unlikely one
For example:
If you have...
I can see how you can attract conductive objects with an electric field, but I'm wondering if it's actually possible to use some sort of electromagnetic phenomena to repel objects, like in Star Trek, or something
Also, how does a Tokamak fusion reactor keep the plasma in place with magnetic...
ha ha ha
I missed obliging too
I said indulgent, since it's a more extreme version of obliging, so far as I know, and I guess I missed accomodating right above it
Yeah, you'd really expect scientists to be the smartest, just because you need mathematical intelligence to do any sort of...
bump
*bump*
ha ha ha ha
man, this thread is so off the wall
There's a guy who has no clue, and a guy who has no clue as to how to grant the other guy a clue
You oughtta explain what energy and mass are, since most people think in terms of "Energy", "Power", "Mass" and "Force" being...
http://www.testonfox.com/
They had a nationally-televised IQ test that was live in the east half of the US, and in Pacific I just finished watching it and getting scored
I got a 55/60, which corresponds to a 127 IQ, apparently
I think that's the top 10% or so, so that's pretty good. I...
I can give you my Audial Hamlet Medley I did in high school to hand in, if you want
You'll probably have to splice in your own teacher's name to a part of it, but other than that it's good to go.
It has a brief section wherein one of our friends declares that he devirginized the English...
Oh man, X-Men 2 was so awe-inspiring, I was so filled with joy that I almost cried
The Matrix 2, on the other hand, was very disappointing.. the fight scenes are as corney as they were in the last movie (Don't believe me? You can ruin the movie(s) for yourself forever by watching the fight...
I oughtta take an IQ test and see how I stack up nowadays.. the only data I have is that way back in elementary school I was roughly tied with two other kids for being the smartest person out of 600, so I'd be in like the top 1/200, I guess, unless my verbal knowledge hasn't grown proportionally...
You oughtta make a note that this thread is about figuring out how to program something and not how to analyze circuits.. I shied away from it at first in a deeply-rooted fear reaction to the word "circuit"
DAMN YOU, HONORS ELECTROMAGNETICS CLASS! AAAAHHHHRRRRGgglll
As for getting mouse...
Yeah, I think that the kinetic friction coefficient is the proportionality constant between the normal force and the frictional force
So you'd take the weight of the object and multiply it by the coefficient to get the friction, I believe (you oughtta check that in your book/with someone...
Isn't the boiling point dependant on the pressure the liquid is under, since liquids boil when the tiny gas-bubbles that form all the time at random are pressurized enough to stay and grow, rather than being instantly crushed?
I guess I'd just look that up on a table or a PVT diagram.. I hear...
oh god, I can't interpret your formulae in my current state
Anywayz, I think I know how to solve the problem you're talking about
If you say that the sum of forces is: Spring - Gravity - Damping you get: (saying that damping is directly proportional to speed) (X is displacement)
Net_Force...
Yo, d00dz
I'm kind of stumped on this problem on my homework: "A monochromatic beam of parallel light is incident on a hole of diameter a >> wavelength. Point P lies in the geometrical shadow region on a distant screen. Two obstacles are placed in turn over the hole. A is an opaque circle...
Yeah, the "eyes" point is indeed quite good
From my psychology class, I gathered that our understanding of the exact way the brain is partitioned into different functionalities is still hazy enough that there might be structures that decode some sort of random forms of radiation..