Acylinder 8 in in diameter and 3 ft long is concentric with a pipe of 8.25 in internal diameter. between the cylinder and the pipe there is an oil film. what force is required to move the cylinder along the pipe at a constant velocity of 3 ft/s? the kinematic viscosity of the oil is 0.006 ft2 /s; the sg is 0.92

The density of a liquid could be found by using

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic