Physics
A car's cooling system uses water to absorb heat from the engine. If 5 kg of water absorbs 420 kJ of heat, what is the temperature increase of water? (Specific heat capacity of water = 4200 J kg⁻¹ K⁻¹)
Calorimetry
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Answer
Given,
Mass of water (m) = 5 kg
Heat absorbed (Q) = 420 kJ = J
Specific heat capacity of water (c) = 4200 J kg⁻¹ K⁻¹
Let, increase in temperature be △t.
From relation,
On rearranging terms,
Substituting the values in the formula above we get,
Temperature of water will increase by 20 °C.
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