Water contained in a closed, rigid tank, initially at 100 lbf/ in.2, 8008F, is cooled to a final state where the pressure is 20 lbf/in.2 Determine the change in specific entropy, in Btu/lb ? 8R, and show the process on sketches of the T– and T–s diagrams.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?