# rolloo

Most popular questions and responses by rolloo-
## physics

100 grams of a liquid with a temp of 70 degreess celcius and a specific heat of 4 J/K/gram is poured into an aluminum pan having a mass of 4000 grams and an initial temp of 20 degrees. with a specific heat capacity of 0.9. what is the final temp of the

*asked on August 4, 2014* -
## math

evaluate the limit as x approaches 0 from the right. of the function xcos(1/x) I know the answer is O but I am not sure as of my reasoning. I just that that since cos(1/x) is being multiplied by a number approching 0 that the whole limit would be o.

*asked on August 17, 2014* -
## calc

let v=i+j+k and w=-2i -k find the magnitude of the projection of w onto v I thought i use the equation proj w onto v= (v.w)/lvl so i got -3/sqrt3 but the answer is 1/sqrt 3

*asked on August 4, 2014*