Calculate the position of the centroids and second moment of areas about a horizontal and vertical axis through the centroid for the following built-up sec- tions. Use the section tables for standard sections (all dimensions are in milli- metres

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

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