Question

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Part B-Fluids Attempt any two of the following three problems Evangelista Torricelli (1608-1647) was the first to put forward the idea that we live at the bottom of an ocean of air. Given the value of atmospheric pressure at the surface of the Earth, and the fact that there is zero pressure in the vacuum of space, determine the depth of the atmosphere, assuming that the density of air and the acceleration of gravity are constant. i. A siphon is a device that allows water to flow from one level to another. The siphon shown in the figure below delivers water from an irrigation canal to a field of crops. To operate the siphon, water is first drawn through the length of the tube. After the flow is started in this way it continues on its own. Using points 1 and 3 in the figure, find the speed v of the water leaving the siphon at its lower end. Express your answer in terms of some or all of the variables d, h, and appropriate constants. ii. Irrigation canal 0 Crops ili. A wooden block with a density of 720 kg/m2 and a volume of 0.013 m is attached to the top of a vertical spring whose force constant is k 630 N/m. Find the amount by which the spring is stretched or compressed if it and the wooden block are completely immersed in water.

Answer 1

(i) Pressure al dpflh 5 413 m oY 8.41 k 2 19.6 d Buoyat frru mas ทา bler 3 bleck んattf 0.056 m