Water from a leaking tap begins to fall into an empty tank 0.5m wide by 2m long by 4m high. If the drops fall at a rate of 2 drops per second and if each drop weighs 0.05g, after how many seconds will the pressure at the bottom of the tank be 200Pa?
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Water from a leaking tap begins to fall into an empty tank 0.5m wide by 2m long by 4m high. If the drops fall at a rate of 2 drops per second and if each drop weighs 0.05g, after how many seconds will the pressure at the bottom of the tank be 200Pa?
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- (Figure 1) shows a container with a cross section area of 15 cm² in which a layer of water floats on top of a layer of mercury. A 1.0 kg wood block with a cross-section area of 10 cm² floats on the water. The water depth, measured from the bottom of the block, is 25 cm. A pressure gauge at the bottom of the container reads 20 kPa. Figure 1.0 kg 25 cm h 10 cm² 15 cm² 1 of 1 > Part A = What is the depth dm of the mercury? Use pw = 1000 kg/m³ as the density of water and pm density of mercury. Express your answer in centimeters. ► View Available Hint(s) dm = Submit ——| ΑΣΦ Provide Feedback Request Answer ? cm Review 13,600 kg/m³ as the Next >A cylinder containing ideal gas is sealed by a piston that is above the gas. The piston is a cylindrical object, with a weight of 22.0 N, which can slide up or down in the cylinder without friction. The inner radius of the cylinder, and the radius of the piston, is 8.00 cm. The top of the piston is exposed to the atmosphere, and the atmospheric pressure is 101.3 kPa. The cylinder has a height of 30.0 cm, and, when the temperature of the gas is 20°C, the bottom of the piston is 11.0 cm above the bottom of the cylinder. (A) Find the number of moles of ideal gas in the cylinder. (B) Heat is added, gradually raising the temperature of the gas to 160°C. Calculate the distance between the bottom of the cylinder and the bottom of the piston when the piston comes to its new equilibrium position.Tire gauges for air pressure, as well as most other gauges used in an industrial environment take into account the pressure due to the atmosphere of earth. That's why your car gauge reads 0 before you put it on your tire to check your pressure. That is called gauge pressure. The real pressure within a tire or other object contains pressurized stuff would be a combination of what the gauge reads as well at the atmospheric pressure. If a gauge on a tire reads 40.16 psi, what is the real pressure in the tire in pascals. The atmospheric pressure is 1.01x10^5 Pa.
- 9. A liquid is flowing through a horizontal pipe whose radius is 2.18 x 10-2 m. The pipe bends straight upward through a height of 10.6 m and joins another horizontal pipe whose radius is 4.36 x 10-2 m. What is the speed of the liquid in the lower horizontal pipe if the pressure in both horizontal pipes is the same? m/s MAR 27 888 5 T G 6 B tv MacBook Air H 8 N 8 DIE A F10 zoom oup by mi 04 M vauies or the puffer AmThe pressure in an automobile tire depends on the temperature of the air in the tire. When the air temperature is 25°C, the pressure gage reads 210 kPa. If the volume of the tire is 0.025 m³, determine the pressure rise in the tire when the air temperature in the tire rises to 44°C. Also, determine the amount of air that must be bled off to restore pressure to its original value at this temperature. kJ kPa.m³ kJ Assume the atmospheric pressure to be 100 kPa. The gas constant of air is R = 0. 287- = 0.287 kg-K The pressure rise in the tire is 210.2 kPa. The amount of air that must be bled off to restore pressure to its original value is 0.000825 kg. kPa.m³ kg.KA container with water is pressurized and attached to a hose. The pressure inside the container, P, is set so that when the end of the tube is 4.5 meters above the water level in the container is ejected at 3.5 m/s. The reservoir in the container is large enough that you can ignore the change in height of the water in the container. What is the pressure P in atmospheres?
- A mosquito is sinking in a pool of sap with density 1040 kg/m3. The mosquito will be crushed when the absolute pressure on it reaches 105 kPa. Assuming that atmospheric pressure is 101 kPa, what depth will the mosquito be at when it is crushed? h = unit | mA Venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at speed v₂ through a horizontal section of pipe whose cross- sectional area is A₂ = 0.0619 m². The gas has a density of p = 1.30 kg/m³. The Venturi meter has a cross-sectional area of A₁ = 0.0393 m² and has been substituted for a section of the larger pipe. The pressure difference between the two sections is P₂ - P₁ = 90.8 Pa. Find (a) the speed v₂ of the gas in the larger original pipe and (b) the volume flow rate Q of the gas. P₂ Hi (a) Number i (b) Number A1 Lo P₁ Venturi meter Units Units ()