Ahalf-gallon container of milk at 65°f is placed in a refrigerator. the milk cools to 40°f after 25 minutes have elapsed. if energy is removed from the milk by heat transfer at a constant rate, determine the rate of heat transfer, in btu/s, during the cooling process. the specific heat and density of the milk are 0.94 btu/lb . °r and 64 lb/ft^3, respectively. kinetic and potential energy effects can be neglected.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

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