A submarine carries a pressure meter so that the crew can work out how far they are below the surface of the sea. At the surface, the meter indicates a pressure of 100 kPa. The density of the seawater is 1030 kg/m^3.
Q.What is the depth below the surface when the meter reads 450 kPa?

Question

A submarine carries a pressure meter so that the crew can work out how far they are below the surface of the sea. At the surface, the meter indicates a pressure of 100 kPa. The density of the seawater is 1030 kg/m^3.
Q.What is the depth below the surface when the meter reads 450 kPa?

anonymous · Answer

let the depth be x
 so at surface x= 0 
P = mg / A
 P/x = mg / V = dg [d= density =m/V]
 x = P / dg
 = 350000 pa/ 1030 x 10 = 33.98 = 34.6 m

anonymous · Answer

Hope that helps!

anonymous · Answer

Im sorry, but i dont really understand what ure writting :(. can u explain in detail? for example ure using P = mg / A is that Pressure = mass x gravitational / ?. what is that A by the way? Area?

ujjwal · Answer

Difference in pressure, p=hdg
where, 
p is difference in pressure
h is difference in height (depth)
d is density of liquid
g is acceleration due to gravity