Recent content by math34

Homework Statement A potter's wheel, with rotational inertia 6.40 kg * m^2, is spinning freely at 19.0 rpm. The potter drops a 2.80 kg lump of clay onto the wheel, where it sticks a distance of 47.0 cm from the rotation axis.Homework Equations I know I need to use angular momentum here, but I...

right. now i get : 2GMh/Re^3 and get with an answer of 441.4 meterswhich turns out to be the right answer, sweet. Thanks everyone!

Did you cancel out GM?

why is m not included in the formula? going off the rest you said: Re = radius of Earth GM/(Re)^2 - GM/(Re + h)^2 Gm[(Re + h)^2 - (Re)^2] /(Re)^2 (Re + h)^2 using this: (R + h)^2 = R^2(1 + h/R)^2 i reduce down to : Gm [ h^2/Re^2 + 2h/Re] / Re^2 does this sound...

Homework Statement A sensitive gravimeter is carried to the top of Chicago’s Willis (formerly Sears) Tower, where its reading for the acceleration of gravity is 1.36 mm/s^2 lower than at street level. Find the building's height, h=? Homework Equations The Attempt at a Solution...

ok so i went under C:\Java\bin i see javac in this bin folder excuse me, i have little to no experience with programming here...what is the next step to fix this issue? Thanks!

yea I am using windows 7 here

yes i believe so

i am having the same issue here but can not find javac.exe... what do i do know?!

so factor groups/quotient groups have been tripping me up recently and if i could a definition and maybe an example from you guys that would help me out a lot.