A 70-ft pipe must transport 2.4 cfs of 40°F water from a head tank to a cooling pond. The elevation difference between the tank and the pond is 4.2 ft. Determine the size of the commercial steel pipe that is required. Include entrance and exit connections and include a globe valve in the pipe.

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

Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]

Plot schematically the tensile stress versus strain curves for a typical thermoplastic material at a temperature below its glass transition temperature (tg and at a temperature above its tg, respectively. do the same for a typical thermosetting material. list in a table any differences or similarities between the two materials at t> tg and t < tg, respectively, and relate them to the structures of the two types of polymers