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27 Nov 2019
1) A specially constructed barometer is filled with ethyl alcoholinstead of mercury.
a) What would be the height of a column of liquid, whose density is0.79 x 10^3, at standard atmospheric pressure?
b) Why do you think mercury instead of ethyl alcohol is used inbarometers?
c) What would be the atmospheric pressure of a distant planet isthis device indicated a column of 76 cm?
2) What is the pressure in a gasoline pipe with a radius of 5 cm 10meters above its intake pipe, which has a radius of 10 cm and flowsat a speed of 0.25 m/s at 1.0 atm?(Gasoline has a density of 0.68 x10^3 kg/m^3).
1) A specially constructed barometer is filled with ethyl alcoholinstead of mercury.
a) What would be the height of a column of liquid, whose density is0.79 x 10^3, at standard atmospheric pressure?
b) Why do you think mercury instead of ethyl alcohol is used inbarometers?
c) What would be the atmospheric pressure of a distant planet isthis device indicated a column of 76 cm?
2) What is the pressure in a gasoline pipe with a radius of 5 cm 10meters above its intake pipe, which has a radius of 10 cm and flowsat a speed of 0.25 m/s at 1.0 atm?(Gasoline has a density of 0.68 x10^3 kg/m^3).
