Ashark swims at a rate of 18 feet per second while chasing his prey and then slows down to a rate of 7 feet per second. the shark chases his prey for t seconds and then swims at the slower speed for s seconds, and covers a total distance of 1200 feet. if all traveling is done in the same direction, which equation best describes this information?

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