Recent content by aussie-girl

Hi again Just before I go to bed (I need to know this stuff for a paper that's due tomorrow!) can I see if this is what you mean: 2.1kg x 4.186 x (4 - 23) = M(ice) x [2.093 x (0 - -5) + 333.55] + 4.186 (4 - 0) -167.021 = M(ice) x 362.2 so to get M(ice) on its own via rearrangement...

Hi again I'm confused by what you said. I can see that you've taken the second M(ice) out of the equation and assume you mean to put that outside a bracket on the right-hand side? but that doesn't make sense to me. are you showing me what you mean by this: M(ice) x [2.093 x (0 - -5) +...

Homework Statement The question is: An ideal heat engine takes in heat Q(in) at a temp T(h). It exhausts heat Q(out). So: (a) how much work is done by engine (b) what is efficiency of engine (c) what is exhaust temp of engine and (d) calculate the answers to above for heat input of 460J at a...

Hi tiny-tim, nice to meet you! So done as suggested and here is the result: part (a): m(cola) x C(water) (Tf - Ts) = M(ice) x C(ice) (0 - Ti) + M(ice) x Lf + M(ice) x C(water) (Tf - 0) part (b): 2.1kg x 4.186 x (4 - 23) = M(ice) x 2.093 x (0 - -5) + M(ice) x 333.55 + 4.186 (4 - 0)...

Homework Statement The question is: a 6 pack of cola cans contains m grams of liquid. you want to put ice into a perfectly insulated box to cool it down from Ts to Tf. The ice initially has temp Ti. So (a)how much ice would you need as a minimum. (ignore presence of cans and final state of...