Igneous rocks are formed due to the a cooling of magma
b weathering of rocks
c changes in pressure
d deposition of sediment

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

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2