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.

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 33.0 m. Assume the density of the water is 1.00 x 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 29.0 cm? N Need Help? Read It

A liquid of density Ꝭ = 850 kg/m3 moves from a horizontal tube of radius r1 into a second horizontal tube of radius r2 (you can consider both tubes to be at the same height).  The radius of the second tube is half of the radius of the first tube.  The difference in pressure between the two tubes (P1 – P2) is equal to 6.00 x 103 N/m2.  Find the speed of the liquid (v1) in the first tube?

You are preparing some apparatus for a visit to a newly discovered planet Caasi having oceans of glycerine and a surface acceleration due to gravity of 5.40 m/s2. If your apparatus floats in the oceans on earth with 30.0 % of its volume submerged, what percentage will be submerged in the glycerine oceans of Caasi?

(a) Calculate the absolute pressure at an ocean depth of 85 m. Assume the density of sea water is 1 021 kg/m3 and the air above exerts a pressure of 101.3 kPa. (b) At this depth, what is the buoyant force on a spherical submarine having a diameter of 5.30 m?

suppose that a mercury barometer is taken to the summit of mt. everest, where the atmospheric pressure is exactly 1/3 that at sea level. if the mercury has a density of 13500 kg/m^3, what will be the difference in the mercury height in the clossed end and open end of the barometer?

Humans evolved in Earth's atmosphere, therefore the pressures interior to the body are relatively close to atmospheric pressure. Because the differences between internal body pressures and atmospheric pressure are so small, individuals have a difficult time gauging the magnitude of atmospheric pressure. Suppose an individual is lying on his stomach with sheets of paper stacked on his back. If each sheet of paper has a mass of 0.00360 kg and is the standard letter size of 8.5 in by 11 in (0.216 m by 0.279 m), how many sheets must be stacked to produce a pressure on his back equal to atmospheric pressure (roughly 101325 Pa)? sheets of paper required:

In 1656, the Burgmeister (mayor) of the town of Magdeburg, Germany, Otto Von Guericke, carried out a dramatic demonstration of the effect resulting from evacuating air from a container. It is the basis for this problem. Two steel hemispheres of radius 0.350 m (1.15 feet) with a rubber seal in between are placed Fogetner and air pumped out so that the pressure inside is 11.00 millibar. The atmospheric pressure outside is 970 millibar. Calculate the force required'to pull the two hemispheres apart. [Note: 1 millibar=100 N/m2. One atmosphere is 1013 millibar = 1.013×105 N/m² ] Submit Answer Tries 0/12 Two equal teams of horses, are attached to the hemispheres to pull it apart. If each horse can pull with a force of 1420N (i.e., about 319 lbs), what is the minimum number of horses required? Submit Answer Tries 0/12 Post Discussion Send Feedback

A torricellian barometer consisting of an inverted tube of mercury in a dish of mercury. When the atmospheric pressure is exactly 1.00 atm, determine the height (h1) of the mercury in the tube?

The maximum depth recorded for a deep-sea dive is 308 m. Assuming that (i) the density of seawater is constant at 1.03 x 103 kg/m3 and (ii) the atmospheric pressure is 101 kPa, calculate the gauge pressure at this depth (in Pa and kPa).