A9-m^3 tank contains nitrogen at 17°c and 600 kpa. some nitrogen is allowed to escape until the pressure in the tank drops to 410 kpa. if the temperature at this point is 15°c, determine the amount of nitrogen that has escaped. the gas constant for nitrogen is 0.2968 kpa-m /kg-k. the amount of nitrogen

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