Q4) Sum of money Q will be received 6 years from now. At 5% annual interest. the present worth now of Q is $60. At the same interest rate, what would be the value of Q in 10 years?

Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg