Heat Heat:Q=C△T Q= amount of heat that must be supplied to raise the temperature by an amount AT [Q]= Joules or calories. 1 Cal=4.186 J 1 kcal= 1 cal=4186 J energy to raise 1 g of water from 14.5 to 15.5oC James prescott Joule found mechanical equivalent of heat C: Heat capacity Q=cmΔT C: specific heat(heat capacity per units of mass) amount of heat to raise T of 1 kg by 1C (( [c]=J/(kg°C) Sign convention +Q: heat gained Q: heat lost Physics 121: Lecture 25, Pg 3Physics 121: Lecture 25, Pg 3 Heat Heat: Q = C  T Q = amount of heat that must be supplied to raise the temperature by an amount  T . [Q] = Joules or calories. energy to raise 1 g of water from 14.5 to 15.5 oC James Prescott Joule found mechanical equivalent of heat. C : Heat capacity 1 Cal = 4.186 J 1 kcal = 1 Cal = 4186 J Q = c m  T c: specific heat (heat capacity per units of mass) amount of heat to raise T of 1 kg by 1oC [c] = J/(kg oC) Sign convention: +Q : heat gained - Q : heat lost