Respuesta :
The absolute pressure is 1.1256 x 10⁸ Pa . the net force on a porthole of diameter 15 cm is 1.987 x10⁶ N.
What is absolute pressure?
Absolute pressure is defined as the pressure of a complete vacuum or the presence of no matter inside a place.
Given depth = 7.0 mile
Distance = 15 cm = 0.15 m
We known that
1 mile = 1.6 km = 1600m
Absolute Pressure = Gauge pressure + Atmospheric Pressure.
= 1.013 x10⁵ N/m² + Density of sea water x g x depth
= 1.013 x10⁵ + ( 1023.6 x 9.81 x 7x1.6x1000)
= 1.1256x10⁸ Pa
Net force = Density of sea water x g x depth x Area of section
Net force = (1.1256 x 10⁸ - 1.013x10⁵) x 3.14 x (15/100)²/⁴
Net force = 1.987 x10⁶ N
Thus, the absolute pressure is 1.1256 x 10⁸ Pa . the net force on a porthole of diameter 15 cm is 1.987 x10⁶ N.
To learn more about absolute pressure, refer to the link below:
https://brainly.com/question/15734722
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