A house that is losing heat at a rate of 50,000 kJ/h when the outside temperature drops to 4 oC is to be heated by electric resistance heaters. If the house is to be maintained at 25oC at all times, determine the reversible work input for this process and the irreversibility.

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.