The initial velocity of a 4.0-kg box is 11 m/s, due west. after the box slides 4.0 m horizontally, its speed is 1.5 m/s. determine the magnitude and the direction of the non-conservative force acting on the box as it slides.

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg