The pilot of an airplane notes that the compass indicates a heading due west. the airplane's speed relative to the air is 130 km/h. the air is moving in a wind at 35.0 km/h toward the north. find the velocity of the airplane relative to the ground.

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