Using following data draw distance –time graph for a moving object, calculate the speed of the object during first 4s from the graph Time (s) 0 2 4 6 8 10 12 14 16
Distance(m) 0 2 4 4 4 6 4 2 0

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