Ametallic material with yield stress of 140 mpa and cross section of 300 mm x 100 mm, is subjected to a tensile force of 8.00 mn. will the sample experience plastic deformation? you must justify your answer.

Air at a pressure of 1atm and a temperature of 40 c is in parallel flow over the top surface of a flat plate that is heated to a uniform temperature of 120 c. the plate has a length of 0.40m (in the flow direction) and a width of 0.15m. the reynolds number based on the plate length is 50, 000. what is the rate of heat transfer from the plate to the air? if the free stream velocity of the air is doubled and the pressure is increased to 10 atm what is the rate of heat transfer?