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- A beachcomber finds a corked bottle containing a message. The air in the bottle is at atmospheric pressure and a temperature of 30.3°C. The cork has a cross-sectional area of 2.10 cm2. The beachcomber places the bottle over a fire, figuring that the increased pressure will push out the cork. At a temperature of 99°C the cork is ejected from the bottle. (a) What was the pressure in the bottle just before the cork left it?2.21 What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20°C? What is the ratio of the kinematic viscosity of air to that of water for the same conditions?1) A beachcomber finds a corked bottle containing a message. The air in the bottle is at atmospheric pressure and a temperature of 30.3°C. The cork has a cross-sectional area of 2.10 cm2. The beachcomber places the bottle over a fire, figuring that the increased pressure will push out the cork. At a temperature of 99°C the cork is ejected from the bottle. (a) What was the pressure in the bottle just before the cork left it?(b) What force of friction held the cork in place? Neglect any change in the volume of the bottle. 2) A tire contains air at a gauge pressure of 5.17 104 Pa at a temperature of 25.0°C. After nightfall, the temperature drops to -10.0°C. Find the new gauge pressure in the tire. (Recall that gauge pressure is absolute pressure minus atmospheric pressure. Assume constant volume.)
- PHET Density X Assignme x → Topic9Wri x y! A diver st X Ⓒ File | C:/Users/marko/Downloads/Topic8WrittenPortion_6_7.pdf Netflix Party - Chro... 90°F Sunny Topic8WrittenPortion_6_7.pdf 1 2 3 Assignments M Gmail D YouTube → Maps A diver st X Netflix CA steel ba x Netflix 1 2/3 | Chegg.co X Log In | TherapyPor... | Topic8W x 100% + | A y! A child's 1 > DELL y! A child's t X A child's toy has a solid plastic disc of radius 10cm that can be rotated about its center. Child A applies a force of 30N tangent to the edge of the disc to cause it to rotate counter clockwise. Child B also applies a force of 20N tangent to the edge of the disc to cause it to counter clockwise. The net torque applied to the disc causes an angular acceleration of 8.33rad/s^2. a) What is the moment of inertia of the solid plastic disc? (answer: 0.6kgm^2) b) What is the mass of the solid plastic disc? (answer: 120kg) C The absol X + I ➡I 0 Q.1 7:23 PM 7/19/2022 x : ⠀b)Air density at 0° C and 1 atmosphere pressure is 1.3 kg / m3. Its density reaches 65 kg / m3 at 0 ° C temperature and 50 atm pressure. What does this incident explain? Where do we take advantage of this feature?At 37 m below the surface of the sea (density of 1422 kg/m3), where the temperatureis 6◦C, a diver exhales an air bubble having avolume of 0.7 cm3.The acceleration of gravity is 9.8 m/s2.If the surface temperature of the sea is 24◦C,what is the volume of the bubble immediatelybefore it breaks the surface?Answer in units of cm3.
- A vertical tube that is closed at the upper end and open at the lower end contains an air pocket. The open end of the tube is under the water of a lake, as shown in the figure. When the lower end of the tube is just under the surface of the lake, where the temperature is 37degC and the pressure is 1.0×105Pa, the air pocket occupies a volume of 630cm3. Suppose now that the lower end of the tube is at a depth of 46m in the lake, where the temperature is 17.0degC. What is the volume of the air pocket under these conditions?For most gases, volume expansivity is 6.0249 × 10^23 * False O TrueAt 25.0 m below the surface of the sea, where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00 cm3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks the surface?
- What is the average velocity of the air molecules in the room where you are right now?(a) If a 500-mL glass beaker is filled to the brim with ethyl alcohol at a temperature of 5.00C, how much will overflow when the alcohol's temperature reaches the room temperature of 22.0 C? (b) How much less water would overflow under the same conditions?At what temperature is the average speed of carbon dioxide molecules ( M=44.0 g/mol) 510 m/s?
