Which of the following statements about body mass index is TRUE? OA. It is the most accurate way to determine body composition.
B. It evaluates body composition by using a 50khz current passed through the participant.
C. It is a simple, rapid, and inexpensive mode of evaluation.
OD It is the most widely used laboratory test for measuring body composition.

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.