A 4.0 kg box has an acceleration of 2.2 m/s2 when it is pulled by a horizontal force across a surface with
μk = 0.50.Find the work done over a distance of 22 cm by the following forces. (Enter your answers in joules.)
(a)the horizontal force(J)
(b)the frictional force(J)
(c)the net work (J)
(d)What is the change in kinetic energy of the box?

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