Inches of mercury is something that would only be used in America. Elsewhere in the world, the mercury height would be in millimeters, or about 760mm (76cm). Mercury has a density of about 13.56 g/cm3, or in other words, each cm of mercury weighs about 13,300 dynes. So 760mm of mercury weighs 1,013,000 dynes. 1 mb is 1 dyne/cm2, so what is the air pressure in mb

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?