Recent content by cair0

KE IS temperature, so you were right on that. velocity however is dependant on mass. c as you guess isn't correct either becuase moles and molecules have a 1 to 1 correspondance. Partial pressures only depend on the number of moles of the gas, and since they are all equal, their partial...

if \frac{2n}{n^2+1} is always greater than \frac1{n}, and you know that \frac1{n} diverges, what do you think that says about something that is larger than it?

consider a similar situation: A train is motionless, however it's surroundings are moving backwards (relative to the train) at 40000 mph. If an R/C helicopter was to lift off inside the stationary train, what would happen to it? Doesn't seem very likely that it would crash into anything now...

So I'm studying for my physics final, and I ran across a problem that is giving me a bit of trouble. http://cyclotron.tamu.edu/dhy/sample_final_exam.pdf the question is 3b. I'm thinking that the wire loop will have no induced current in it since there isn't a change in flux when you...

x^2 + y^2 = s^2 s^2 + z^2 = r^2 x^2 + y^2 + z^2 = r^2

you can do that?

im not entirely sure how to integrate R^2 theough dm i mean in a uniform rod, M = Lp, so dm = p dL, but then integrating that, i get pR^3 /3 where am i going wrong here?

lim f(x) x->0- doesn't equal lim f(x) x->0+ 2 needs more info to solve i believe

i've been wondering why the I for a uniform rod held at one end is \frac{1}{3}ML^2 i know that it has something to do with the parallel axis theorm, but after finiding the first I, being: M(\frac{L}{2})^2 I am confused as how to find the I of the meter stick rotating about its parallel...

yeah the problem SHOULD give you an origin if it is asking for the potential energy, since if it doesnt, you could set it anywhere and have pretty much any potential you wanted

yeah that one was really obvious now that i think about it, for some reason i kept getting stuck with the 2nd derrivative of x = the 1st derivative of x, and that notation ws getting me nowhere...

the assumption is that it will accelerate...

you need to add the I of the boy and the I of the disk I for a uniform disk rotating about the center of mass is \frac{1}{2}MR^2 I for a point mass is MR^2 add them together you get (\frac{1}{2}M_{merry-go-round} + M_{boy})R^2

two problems in particular, one i got in calc, the other in physics one asks if a = -v and v = 1 when t = 0 what is a possible position function for this equation the other one is given a = 3x and starting at rest from x = 0 find the velocity at 5 seconds i can't seem to...

linear momentum and angular momentum are not the same thing. What you want to do is set the boys rotational inertia to the rotational intertia of the entire system. you should get something like mvr = Iw I is the I of the system, I am sure you can figure that out..