/sci/ - Science & Math

>>10102250
My brains not working here. I considered the change in heat though tried subtracting the 5 degrees from the fusion heat, that didn't work. The annoying thing is that this is going to be so obvious when I wrap my head around it but for God knows why isn't making sense at the moment. Let's see
>ice needs heat to transfer into liquid
>heat is transferred at 0 degrees
>ice needs to be heated from 5 degrees to 0 so it melts albeit very slowly
God fucking damn it, went through every equation on the past two powerpoints and they aren't doing anything.
Used specific heat formula;
Q = M x CP x ΔΘ
Then inputted values for Q
>Q = 19.9 x 2108 x 5
>got completely wrong answer

Used
>Q = M x λ (subscrip f)
Inputted values pretending that Q wasn't 5 because then it'd solve itself
>Q = 19.9 x 334
>again completely wrong

I don't get it, you have to transfer heat so the the overall heat increases, where this heat comes from fuck knows but it works (2108J of heat on ice would presumably be roasting in the first place) and if water is fusing like a pack of yu-gi-ohs at over 334 kJ its probably magma. Still, we need heat to heat the heat so stuff melts, we need to know how much heat is inputted in this case, initially the ice is at 5 degrees then goes to 0 degrees, specific heat then means nothing so it might as well not be there, fuck off specific heat and drink bleach. What do we use then?

I hate it when this happens, its the only thing that annoys me - failing at the most basic shit that 10 year olds can do, might as well be dead if that's the best I can do.