8.14 following are tabulated data that were gathered from a series of charpy impact tests on a tempered 4140 steel alloy. temperature (°c) impact energy (j) 100 89.3 75 88.6 50 87.6 25 85.4 0 82.9 −25 78.9 −50 73.1 −65 66.0 −75 59.3 −85 47.9 −100 34.3 −125 29.3 −150 27.1 −175 25.0 (a) plot the data as impact energy versus temperature.

Anybody wanna ? (picture included? )

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

If the new moon happens on january 15th, what shape will it be on february 6th?