Question

2 kg of water has cooled from 40 °C to 37 °C. How much energy has left the water?

Answer 1

Q = 25092 J

Step-by-step explanation:

Mass of water is 2 kg

Water has cooled from 40 °C to 37 °C.

It is required to find the energy has left the water. The heat left by the water is given by :

`Q=mc\Delta T`

c is specific heat capacity, c = 4182 J/kg°C

So,

`Q=2* 4182* (40-37)\\\\Q=25092\ J`

So, the 25092 amount of heat has left the water.