The initial of a closed system is 45°C. The system undergoes an adiabatic process to a new temperature of 70°C. Calculate the work done, if the system is am ideal gas(cv= 25J/kgK ) and the mass 4kg.​

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.