Asked by HERITAGE
A blacksmith dropped a1.5kg iron bead at 300 degree Celsius into some quantity of water , if the temperature of the water rose from 15 to 18 Celsius, what is the mass of water assuming no heat is lost to the surrounding ( take specific heat of iron as 0.46JKg -1c-1, and that of water as 4.2* 103jkg-1c-1)