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A hot water stream at 80 C enters a mixing chamber with a mass flow rate of 0.5 kg/s where it is mixed with a stream of cold water at 20 C.If it is desired that the mixture leae the chamber at 42 C,determine the mass flow rate of the cold-water stream.Assume all the streams are at pressure of 250 kPa.Answer :0.865 kg/s
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A cooking pot whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
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a rectangular gate of 1m wide is hinged at its top edge shown as bellow. there is water at the right hand side of gate
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