20. Calculate the pressure at a height of 8000 m above sea-level if the atmospheric pressure is 101.3 kN/m and temperature is 15°C at the sea-level assuming (i) air is incompressible, (ii) pressure variation follows adiabatic law, and (iii) pressure variation follows isothermal law. Take the density of air at the sea-level equal to 1.285 kg/m'. Neglect variation of g with altitude. [Ans. (i) 607.5 N/m², (ii) 31.5 kN/m² (üi) 37.45 kN/m² ] Oil (S= 0.96) Liquid (S= 1.6) 0.3 m m.

20. Calculate the pressure at a height of 8000 m above sea-level if the atmospheric pressure is 101.3 kN/m and temperature is 15°C at the sea-level assuming (i) air is incompressible, (ii) pressure variation follows adiabatic law, and (iii) pressure variation follows isothermal law. Take the density of air at the sea-level equal to 1.285 kg/m'. Neglect variation of g with altitude. [Ans. (i) 607.5 N/m², (ii) 31.5 kN/m² (üi) 37.45 kN/m² ] Oil (S= 0.96) Liquid (S= 1.6) 0.3 m m.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter11: Temperature And Temperature- Related Variables In Engineering

Section: Chapter Questions

Problem 10P: Calculate the thermal resistance due to convection for the following situations: a. warm water with...

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