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0 votes
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in Physics by (15 points)
edited by

20 kJ of energy is added at constant pressure to a 4 kg liquid water at 100 kPa and 20oC. How hot does it get heated?

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1 Answer

+1 vote
by (18.1k points)

h2 = h1 + θ/m

h2 = h1 + θ1/m

h2= 83.94 + 20/4

h2 = 88.94 kJ/kg

ΔT = θ2/mc \(=\frac{20}{(4\times4.18)}\) = 1.19 °C

T2 = 21.19 °C

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