Consider a steady state heat flow through a 12 feet x 14 feet brick wall of thickness 15 inches and thermal conductivity 1.5 btu/(hr-ft-f). on a day when the temperature of the outdoor is 32 f, the house is maintained at 78 f. the temperatures of the inner and outer surfaces of the brick wall are to be 68 f and 41 f, respectively. determine the rate of entropy generation in the wall and the total rate of entropy generation associated with this heat transfer process

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Fluids at rest possess no flow energy. a)- true b)- false