Recent content by hatinengr

Yeah, I saw that earlier but the approach confused me a bit. After thinking about it again, I've got it. Thanks a lot.

you too, thanks

you use the centripetal force equation. mv^2/r. you find v by dividing the length of the orbit (2*pi*r) by T. i think i remember that you have to convert the radius to meters and then convert back to km for the answer. on a side note, where you able to get problem 16? can you explain how...

I am having trouble with this problem as well. Using that equation I only know that A=(pi*3^2) but don't know how to get v or how to solve for the rate of leakage (atoms per second). Any help would be appreciated.

i finally got this problem. moment of inertia of the device is 8*(MR^2). You subtract sin(45)Rmv from it to get angular momentum. The problem has expired now so unfortunately it may not help.

Multiply out the velocities and masses given and add them for Pinitial. Find final p of junk and subtract it from intitial sum. for the mc, its the 3 choices that say that things stay the same at loc. a,b, and c. I really need help with the original problem though. I have tried to find...

I think the moment inertia for a ball is (2/5MR^2), however I don't know what else goes into computing the angular momentum. I am working on this same homework problem and only have b, c, and d left to do.