(a) asingle crystal of a metal that has the bcc crystal structure is oriented such that a tensile stress is applied in the [100] direction. if the magnitude of this stress is 4.0 mpa, compute the resolved shear stress in the [111]direction on each of the (), and (101)planes.(7 pts)(b) on the basis of these resolved shear stress values, which slip system(s) is (are) most favorably oriented? (1 pt)

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.