A Barrel contains a 0.120 m layer of oil floating on water that is 0.250 m deep. The density of the oil is 600kg/m3. (a) What is the gauge pressure at the oil - water interface ? (b) what is the gauge pressure at the bottom of the barrel ?
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Heya,
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a)
Hydro static pressure = r x g x h
r =density of the fluid
g=acceleration due to gravity
h=depth.
gauge pressure of the oil-water interface= 9.81 x 0.12 x 6.00 x 10³
= 7.06 kPa
gauge pressure at the bottom of the barrel= ?
density of water= 1000
so the additional pressure due to the water layer = 1000 x 9.81 x 0.25 = 2.45 kPa.
Total pressure= 9.51 kPa.
b)
Gauge pressure at the bottom will be due to both water and oil
∵Pbottom= H1P1G+H2P2G
=9.81*(0.12*600+0.25*1000)
=3158.82Pa
__________
Here's your answer
_________________
__________________
a)
Hydro static pressure = r x g x h
r =density of the fluid
g=acceleration due to gravity
h=depth.
gauge pressure of the oil-water interface= 9.81 x 0.12 x 6.00 x 10³
= 7.06 kPa
gauge pressure at the bottom of the barrel= ?
density of water= 1000
so the additional pressure due to the water layer = 1000 x 9.81 x 0.25 = 2.45 kPa.
Total pressure= 9.51 kPa.
b)
Gauge pressure at the bottom will be due to both water and oil
∵Pbottom= H1P1G+H2P2G
=9.81*(0.12*600+0.25*1000)
=3158.82Pa
__________
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