Which car has the most kinetic energy ? a car of mass 1300 kg with speed 3 m/s ? a car of mass 1200 kg with speed 2m/s ? a car of mass 1400 kg with speed 4 m/s ? a car of mass 1500 kg with speed 1500 ?

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