Who wrote the song there stands the glass

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

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false