A cylinder having a piston restrained by a linear spring (of spring constant 15 kN/m) contains 0.5 kg of saturated vapor water at 120◦C, as shown in Fig. P3.105. Heat is transferred to the water, causing the piston to rise. If the piston’s cross-sectional area is 0.05 m² and the pressure varies linearly with volume until a final pressure of 500 kPa is reached, find the final temperature in the cylinder and the heat transfer for the process.

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H20 FIGURE P3.105