Recent content by ks23

sorry, i slept on it now, and solved in 2 secs. Guess i was just too tired yesterday, but thank you all for trying to help :)

ive tried all that, I've been working with this for like an hour, and its SO frustrating because it should be so simple to do. I don't know if its just because I am tired and my brain is burning up or something, but could you please write out every step for me, maybe i can see it then..

combining two equations - HOOOOW? Homework Statement Ok i have to equations: 1: S-f-m*g*sinΘ=0 2: S*r - f*R = 0 Those 2 equations i need to solve to get an expression for S and f, and i am supposed to get this: S =( m*g*sinΘ ) / (1-r/R) f = (m*g*sinΘ ) / (R/r -1) I really need...

Homework Statement A 15 kg block of ice at 0 celsius degrees melts to liquid water at 0 celsius degrees inside a large room that has temperature 20 celsius degrees. Treat the ice and the room as an isolated system, and assume that the room is large enough for its temperature change to be...