The rectangular plate shown weighs 80 lb and is supported by three vertical wires. determine the weight and location of the lightest block that should be placed on the plate if the tensions in the three wires are to be equal.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?