Figure 3 shows a large drinking water bottle equipped with a hose and a valve. One end of a 7 mm diameter plastic hose is inserted into the bottle placed on a high stand, while the other end with an on/off valve is maintained 60 cm below the bottom of the bottle. If the water level in the bottle is 45 cm when it is full, estimate how long it will take at the minimum to fill a 240 cm³ glass when, (a) the bottle is first opened (b) the bottle is almost empty 45 cm Water 60 cm Figure 3

Figure 3 shows a large drinking water bottle equipped with a hose and a valve. One end of a 7 mm diameter plastic hose is inserted into the bottle placed on a high stand, while the other end with an on/off valve is maintained 60 cm below the bottom of the bottle. If the water level in the bottle is 45 cm when it is full, estimate how long it will take at the minimum to fill a 240 cm³ glass when, (a) the bottle is first opened (b) the bottle is almost empty 45 cm Water 60 cm Figure 3

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.28P

See similar textbooks

Similar questions

Please provide solutions. 1. A pipe 2.50 cm in diameter is 1.0 m long and filled with 0.60 m of water. If the pipe is capped at both ends and rotated in a horizontal plane about a vertical axis through one end of the pipe, what is the pressure at the other end of the pipe when it is rotating at 200 RPM? Problem A: An open vertical cylindrical tank 0.60 m in diameter and 1.20 m high is half full of water. If it is rotated about its vertical axis so that the water just reach the top, find the speed of rotation. What will then be the maximum pressure in the tank? If the water were 1.0 m deep, what speed will cause the water to just reach the top? What is the depth of the water at the center? 2. If the tank of Prob. A is half full of oil (sp. gr. 0.75) what speed of rotation is necessary to expose one-half of the bottom diameter? How much oil is lost in attaining this speed? Answer: 18.70 rad/s ; 42.5 litres
A 80 cm tall cylinder is filled with water (ρwater = 1000 kg/m3) and oil (ρoil = 600 kg/m3) and is capped on the bottom so no fluid is flowing. It contains equal amounts of the two fluids by weight. What is the pressure at the bottom of the cup?
A 1.0 m radius cylindrical industrial tank filled with viscous oil to a level at a height h from its base, must be drained through a tube with a radius of 0.2 m and length L, connected to its base. The speed profile of oil in the drain tube can be described by the equation below. Where v is the oil speed, vmax is a = maximum oil speed, r is the radius, and R is the tube radius. Considering this problem situation, do what is asked in the following items, justifying your answers. a) What is the volume, in liters, of oil removed from the tank after 10 seconds, if the maximum discharge speed does the oil reach 0.35 m/s? Data: π ≈ 22/7; 1 m3 = 1000 L. b) What flow regime does the system operate? Demonstrate. Data: specific mass of oil = 800 kg/m3, specific mass of water = 1000 kg/m3, oil viscosity = 0.056 Pa.s e viscosity of water = 0.001 Pa.s.
In the figure, the cylindrical capacitor, connected to a constant voltage source Vo= 80 V, rests with its edges on the surface of the water of density ρ=1000 kg/m3 . The distance d=0.4 cm between the condenser armatures is much smaller than its radius half. Find the height "h" at which the water level is established between the reinforcements of the condenser. Neglect capillary phenomena. (k=9•109N•m2/C2,κ=81,g=9.8m/2)
Water at 30ºC is able to climb up a clean glass of 0.2 mm diameter tube due to surface tension.The water-glass angle is 0º with the vertical. How far up the tube does the water climb? At 30 ºC water surface tension = 0.0718 N/m and density = 996 kg/m3
The clutch system shown in Fig is used to transmit torque through a 2-mm-thick oil film with ? = 0.38 N⋅s/m2 between two identical 30-cm-diameter disks. When the driving shaft rotates at a speed of 1200 rpm, the driven shaft is observed to rotate at 1125 rpm. Using appropriate software, investigate the effect of oil film thickness on the torque transmitted. Let the film thickness vary from 0.1 mm to 10 mm. Plot your results, and state your conclusions.
As given in the figure, a cylindrical 125 cm high and 89 cm diameter The inside of the tank is initially completely filled with oil. Then, a 1.25cm diameter hole is drilled on the bottom edge of the tank and the oil begins to drain from this hole. Oil outlet speed 2gh given as. (h is the variable height of the oil in the tank from the hole center and g is the acceleration of gravity). From the bottom of the oil level in the tank Calculate the time it takes to fall to a height of 15 cm as [s].
A compressed air tank is designed to contain 50 standard cubic feet of air when filled to a gaugepressure of 200 atm at an ambient temperature of 70 F. Assume this is an air tank for scubadiving, and that the approximate shape of the tank is a cylinder with circular cross section. The interior volume of the tank is v=0.253 ft^3(a) If the interior length of the cylinder is 1 ft, what would be the inner diameter?(b) It is desired that the air tank be neutrally buoyant when empty. The density of aluminum is2700 kg/m3. If the tank is made of aluminum, what should be the wall thickness in order forit to be neutrally buoyant?
) A 75 mm-diameter orifice is on the verticalside of a closed tank. The tank rests on a flat groundand the orifice is 0.5 m above the ground. Filled withfour fluids with air on the topmost portion that is undera pressure of 15 KPa, and the rest of specific gravities of0.80, 1.0, and 1.50, respectively, the jet hits the groundat a horizontal distance of 3.75 m. If the liquids have thesame thickness, and the power lost in the system is 233watts, determine the following:(a) The initial discharge in L/s if C=0.63.(b) The thickness of each liquid in m.(c) The coefficient of contraction.
A capillary tube d =5 mm in dia meter is placed in a liquid.The surface tension is = 0.05N/m, and the angle B made by the liquid with the wetted tube wall is 60 degrees. Thedensity of the liquid is p = 500kg/m3. What is the height to which the liquid will rise in the tube?
A centrifuge bowl is to separate two immiscible liquids, one with SG 1.1 and the other with SG 0.9. The inside diameter of the bowl is 20cm, and it is rotating at 11000 rpm. The liquid-liquid interface is located 7cm from the axis of rotation, while the free liquid surface is 4cm away from the axis of rotation. Using the equations below, estimate the radial distance from the rotational axis to the top of the overflow dam.
A pump discharges 8000 liters per minute of a certain brine solution (SG=1.20) to an evaporating pond. The intake line is 25cm in diameter and is at the same level as the pump discharge line, which is 15cm in diameter. The pressure at the inlet of the pump is -170mm of mercury. The pressure gage connected to the pipe discharge reads 150 kPa, and its center is 2.0mabove the center of the discharge flange. The vapor pressure of the brine solution is 40mm of Hg. If the pump efficiency is 80%. How much power is required?