-Z/Zo 3 The density of air as a function of altitude above sea level is modeled as p(z) = poe` where po = 1.2 kg/m³, and zo = 16, 855 m. A spherical balloon with radius r = 0.2 m is filled with Helium gas (MH₂ = 4 g/mol) to STP (P = 1 atm, T = 273 K). What is the maximum height the balloon can float up to assuming constant pressure and temperature within the balloon? Assume that the density of air is constant across the volume of the balloon for a specific height, and that the balloon's rubber has negligible mo

-Z/Zo 3 The density of air as a function of altitude above sea level is modeled as p(z) = poe` where po = 1.2 kg/m³, and zo = 16, 855 m. A spherical balloon with radius r = 0.2 m is filled with Helium gas (MH₂ = 4 g/mol) to STP (P = 1 atm, T = 273 K). What is the maximum height the balloon can float up to assuming constant pressure and temperature within the balloon? Assume that the density of air is constant across the volume of the balloon for a specific height, and that the balloon's rubber has negligible mo

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...

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A hemispherical container, 26 inches in diameter, is filledwith a liquid at 20 ° C and weighed. The liquid weight isfound to be 1617 ounces. ( a ) What is the density of thefluid, in kg/m 3 ? ( b ) What fluid might this be? Assume standardgravity, g = 9.807 m/s 2 .
When a clean glass tube with a diameter of 2 mm is immersed in water at 20 ° C, how many mm will the capillary rise occur in the glass tube? For water at 20 ° C, surface tension is given as 0.073 N / m, density 1000 kg / m3, contact angle 0 ° C and gravitational acceleration 10 m / s2.
A milkshake has fairly similar density to that of water (m s = 1200 kg/m3) but is far more viscous ( = 1kg/ms) (a) Say you try to drink a milkshake through a straw that is 30 cm long and 5 mm in diameter. Your lungs are capable of creating a vacuum pressure of 3000 Pa. (Vacuum pressure just means a pressure below that of the atmosphere, so plung = patm 3000 Pa.) You Önd that if you place the straw just at the surface of the liquid, you are unable to suck the milkshake through the straw, but if you push the straw deeper into the shake, you can. To what depth, d, would you need to push the straw in order to just start to sip the milkshake?(b) Suppose you push the straw to a depth of 10 cm and suck with a suction pressure of 3000 N/m2. What volume áow rate of milkshake can you produce through the straw
A vertical glass tube has an inside diameter of 1 mm. When pressure is applied, a column of water at 20 ° C rises through it to a height of 25 cm. Estimate the applied pressure in pascals, once the effect of surface tension has been corrected
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Fluid mechanics, I need solutions in 15 minutes please. MCQ/Determine the horizontal and vertical components of the liquid pressure acting on the semicylindrical gate ABC, as shown in the figure. The width into the paper is 1 m. A-Fx = 257.430 kN and Fy = 59.801 kN B-Fx = 164.018 KN and Fy = 37.229 KN C-Fx = 269.894 kN and Fy = 65.526 KN D-Fx = 98.182 kN and Fy = 20.002 KN E-Fx = 234.789 kN and Fy = 52.418 kN F-Fx = 187.005 kN and Fy = 42.182 KN G-Fx = 119.956 kN and Fy = 25.550 KN H-Fx = 141.327 kN and Fy = 31.171 KN I-Fx = 288.147 kN and Fy = 69.098 KN J-Fx = 213.112 kN and Fy = 47.903 KN
A storage tank, 26 ft in diameter and 36 ft high, is fi lledwith SAE 30W oil at 20 ° C. ( a ) What is the gage pressure,in lbf/in 2 , at the bottom of the tank? ( b ) How does your resultin ( a ) change if the tank diameter is reduced to 15 ft?( c ) Repeat ( a ) if leakage has caused a layer of 5 ft of waterto rest at the bottom of the (full) tank.
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In Fig.the tank contains water and immiscibleoil at 20 ° C. What is h in cm if the density of the oil is898 kg/m 3 ?
La Paz, Bolivia, is at an altitude of approximately12,000 ft. Assume a standard atmosphere. How highwould the liquid rise in a methanol barometer, assumedat 20 °C?
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