11. ssm An airtight box has a removable lid of area 1.3 × 10-° m² andnegligible weight. The box is taken up a mountain where the air pressureoutside the box is 0.85 × 10° Pa. The inside of the box is completelyevacuated. What is the magnitude of the force required to pull the lid offthe box?

Here, Area(A) of box given is as mentioned below. Pressure(P) given is as shown below.

Answered: 11. ssm An airtight box has a removable…

University Physics Volume 2

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Chapter2: The Kinetic Theory Of Gases

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Problem 55P: (a) Given that air is 21% oxygen, find the minimum atmospheric pressure that gives a relatively safe...

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In about 1657. Otto von Guericke, inventor of the air pump, evacuated a sphere made of two brass hemispheres (Fig. P9.89). Two teams of eight horses each could pull the hemispheres apart only on some trials and then with greatest difficulty, with the resulting sound likened to a cannon firing. Find the force F required to pull the thin-walled evacuated hemispheres apart in terms of R, the radius of the hemispheres, P the pressure inside the hemispheres, and atmospheric pressure P0. Figure P9.89
The average human has a density of 945 kg/m3 after in haling and 1 020 kg/m3 after exhaling. (a) Without making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a body of water with a density of about 1 230 kg/m3) in each of these cases? (b) Given that bone and muscle are denser than fat, what physical characteristics differentiate sinkers (those who tend to sink in water) from floaters (those who readily float)?
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15. ssm A glass bottle of soda is sealed with a screw cap. The abso- lute pressure of the carbon dioxide inside the bottle is 1.80 × 10° Pa. Assuming that the top and bottom surfaces of the cap each have an area of 4.10 X 10-4 m², obtain the magnitude of the force that the screw thread exerts on the cap in order to keep it on the bottle. The air pressure outside the bottle is one atmosphere.
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C) If the air pressure remained the same and the air temperature was 70 °F, what is the density of theair near the surface of the water?
BP-11 A tank of water has a spout located 13.5 cm below the water line. The tank is sealed and the pressure of the air above the water in the tank is kept at 4.65 atm. The diameter of the spout is 0.250 cm, which is very small compared to the diameter of the tank. Assume that the the air outside of the tank is exactly 1.00 atm. pressure of (a) If the spout is opened, at what speed (in units of m/s) does the water come out? Hint: you'l11 need to use both Bernoulli's equation and the equation of continuity. (b) What is the volume flow rate of the water coming out of the tank, in units of cm/s? (c) At this rate, how long would it take to fill up a water bottle 13.5 cm with a volume of 1.00 liter? a 99+ hp
An airtight box has a removable lid of area 2.29 × 10-² m² and negligible weight. The box is taken up a mountain where the air pressure outside the box is 8.17 x 104 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the box? Number Units
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