What is the position and kind of image produced by the lens shown above?
Please helpp

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.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Which describes increasing the efficiency of energy resource