Abrass alloy is known to have a yield strength of 240 mpa (35,000 psi), a tensile strength of 310 mpa (45,000 psi), and anelastic modulus of 110 gpa (16.0 x 106 psi). a cylindrical specimen of this alloy 15.2 mm (0.60 in) in diameter and 380 mm(15.0 in) long is stressed in tension and found to elongate 19 mm (0.075 on the basis of the information given, is itpossible to compute the magnitude of the load necessary to produce this change in length? if so, calculate the load; if not, explain why.

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.