Question

4 kg of water at 80 degree celsius is mixed with 4 kg of water at 10 degree Celsius after sometime the temperature of mixture will lie between __ Celsius and 80 Celsius​

Answer 1

Answer:

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Explanation:

Answer 2

Given info : 4 kg of water at 80°C celsius is mixed with 4 kg of water at 10°C.

To find : the temperature of the mixture will lie between __ to 80°C

solution : we know that the heat flows from higher temperature to lower temperature.

so, heat lost by water at 80°C = heat gained by water at 10°C

let the temperature of the mixture is T.

⇒ m₁s(80 - T) = m₂s(T - 10)

here, m₁ = m₂ = 4 kg

⇒ 80 - T = T - 10

⇒ T = $\frac{80+10}{2}$ = 45°C

therefore the temperature of the mixture lies between 10°C to 80°C and that is 45°C.