The space between two 6-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 ×10-3lb·s/ft2). the inner cylinder has a radius of 3in. 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.

Which of the following statement is false

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.