What is the downward force exerted by the atmosphere on a soccer field whose dimensions are 105 m by 55 m?
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- 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:A viewing window on the side of a large tank at a public aquarium measures 50 in. by 60 in. The average gauge pressure from the water is 8 psi. What is the total outward force on the window?For an airplane in flight, the average speed of the air relative to the plane is 283 m/s below the wings and 311 m/s above the wings (see the figure below). The bottom of each wing has a surface area of 30.5 m². Calculate the lift, which is the net upward force of air on the plane.
- 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 0.00380 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 pressure on his back equal to atmospheric pressure (roughly 101325 Pa)? sheets of paper required:Consider a sheet of paper 8.35 in by 11.45 in. How much force, in newtons, is exerted on one side of the paper by the atmosphere? F= ?Assume that a raindrop has a volume of 0.05 cm^3 and you need an Avogadro's number of raindrops to fill up the cubic water tank. What is the length of the edge of the tank?
- The inside of the space shuttle is pressurized to 1.01x105 N/m2 while in deep space (outside pressure = 0). What is the outward force acting on the windshield of the craft if the windshield has a surface area of 0.5 m2?For an airplane in flight, the average speed of the air relative to the plane is 283 m/s below the wings and 311 m/s above the wings (see the figure below). The bottom of each wing has a surface area of 31.8 m2. Calculate the lift, which is the net upward force of air on the plane.