What will be the surface tension of a liquid (ρ = 0.876 g / cm3) that reaches 2.0 cm in a capillary where water at 20 ° C reaches 4.5 cm?
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What will be the surface tension of a liquid (ρ = 0.876 g / cm3) that reaches 2.0 cm in a capillary where water at 20 ° C reaches 4.5 cm?
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- If blood with a speed of 11.0 cm/s and density of 1043 kg/m3 travels from a 0.030 mm diameter capillary to a 0.0400 mm diameter capillary with a 2.00% increase in density, what is its new speed? Why the change in density?What fraction of ice is submerged when it floats in freshwater, given the density of water at 0°C is very close to 1000 kg/m3 ?A sump pump (used to drain water from the basement of houses built below the water table) is draining a flooded basement at the rate of 0.75 L/s, with an output pressure of 1.5×10^5 Pa. (a) The water enters a hose with a 2.8 cm inside diameter and rises 2.2 m above the pump. What is its pressure at this point? (b) The hose goes over the foundation wall, losing 0.55 m in height, and widens to 6.6 cm in diameter. What is the pressure now? You may neglect frictional losses in both parts of the problem.
- A typical hot air balloon can carry 3–5 passengers in a wicker basket and has a total mass of m = 470 kg including passengers, not including the mass of air inside the balloon. The density of hot air inside the stationary balloon is ?hot = 0.960 kg/m3 and the density of the cooler outside air is ?cool = 1.22 kg/m3. Determine the volume of hot air required for the balloon to be in equilibrium so that it neither sinks nor rises in the air.A company needs to pump coconut oil (den: 924 kg/m^3) from the import truck to its holding tank 17 meters above the ground. If the pump that is used is able to create 3 ATM of pressure, what will be the velocity of the oil as it enters the tank?Fire hoses used in major structure fires have inside diameters of 6.4 cm. Suppose such a hose carries a flow of 40 L/s starting at a gauge pressure of 1.62 × 10°N/m². The hose goes 10 m up a ladder to a nozzle having an inside diameter of 3 cm. Assume negligible resistance, density of water is 1000 kg/m³, and atmospheric pressure = 1.013×105 Pa. Using the flow rate (a) Calculate the velocity at the start of the hose. V = start m/s (b) Calculate the velocity at the nozzle. V = nozzle m/s Pnozzle (c) Calculate the gauge pressure at the nozzle, P, If nozzle <3%, then enter P nozzle =0, else P atm |P nozzlel enter the calculated value. If atm <3%, then we are going to assume that the absolute pressure at the nozzle is approximately equal to the atmospheric pressure, making the gauge pressure almost zero when compared to the atmospheric pressure. Pnozzle Pa