siennalipec
siennalipec siennalipec
  • 26-05-2020
  • Physics
contestada

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

Respuesta :

PhantomWisdom PhantomWisdom
  • 31-05-2020

Answer:

Q = 25092  J

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 :

[tex]Q=mc\Delta T[/tex]

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

So,

[tex]Q=2\times 4182\times (40-37)\\\\Q=25092\ J[/tex]

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

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