Aheat pump is used to maintain a house at 25c by extracting heat from the outside air on a day when the outside air temperature is 4c. the house is estimated to lose heat at a rate of 110,000 kj/h, and the heat pump consumes 4.75 kw of electric power when running. is this heat pump powerful enough to do the job?

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m