specific heat capacity

1. 你先面明白-1既意思係咩
-1既意思姐係將果樣野俾1除 所以kg^-1= 1/kg c^-1=1/c

therefor especific heat capacity of water is 4200j/kg*c
要將g轉左kg要x1000 g x1000=kg
therefore 4200j/g*1000*c
=4.2 jg^-1c^-1

2. E=mc*(change inTemperature)
60x1000=4*2500*(f-20)
6=f-20
f=26

therefore final temp is 26c