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A mixture of saturated water vapor and liquid at the quality of 0.85 is trapped in a 1Lcylinder. Heat is being added to the mixture and pushing the piston upward

to the volume of1.5 L where it starts to touch the spring. At what temperature the pressure in the cylinder reaches 0.2 MPa? (The radius of the piston is 75 mm and the liner constant of the spring is90 N/mm). Explain your solution with details.

Fig: 1

Fig: 2