The velocity in a certain two-dimensional flow field is given by the equation where the velocity is in ft/s when x, y, and t are in feet and seconds, respectively. what is the magnitude of
(a) the velocity and
(b) the acceleration at the point x = y = 2 at the time t = 0? (a) |v| = 0 ft/s

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure