Acube of sides 10cm is partly filled with sand of density 3.8g/cm3. if the weight of the sand is 200g, find the height in mm up to which it is filled in the container?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

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.