Which of the following represents the formula to determine the approximate age of a tree? Circumference x 4.5 feet above the Stump

Circumference x Growth Factor

Circumference x Pi x Species Number

Diameter x Growth Factor

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

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.

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)