- #1
DecoratorFawn82
- 7
- 0
I'm very new to physics and I haven't learned exactly
what everything is called yet. Sorry if I confuse you.
1. Homework Statement
How deep do you have to dive in a lake to get
the total pressure 3 times as large as the airpressure
at the surface of the water (101,3 kPa)?
Normal pressure at sea surface: 101,3 kPa = 101,3*(10^3) Pa
Water density: 998 kg/m3
Gravity in Sweden: 9.82 N/kg
p = 101,3 kPa
ρ = 998 kg/m3
g = 9.82 N/kg
Fluid pressure formula: p = ρgh
Get deep (h): h = p/(ρ*g)
h = (101,3*(10^3))/(998*9.82)
h = 10.34 m
Total pressure three times as large as the airpressure at the sea surface
h = 10.34 * 3
h = 31 m
Correct answer: 20 m
what everything is called yet. Sorry if I confuse you.
1. Homework Statement
How deep do you have to dive in a lake to get
the total pressure 3 times as large as the airpressure
at the surface of the water (101,3 kPa)?
Normal pressure at sea surface: 101,3 kPa = 101,3*(10^3) Pa
Water density: 998 kg/m3
Gravity in Sweden: 9.82 N/kg
p = 101,3 kPa
ρ = 998 kg/m3
g = 9.82 N/kg
Homework Equations
Fluid pressure formula: p = ρgh
Get deep (h): h = p/(ρ*g)
The Attempt at a Solution
h = (101,3*(10^3))/(998*9.82)
h = 10.34 m
Total pressure three times as large as the airpressure at the sea surface
h = 10.34 * 3
h = 31 m
Correct answer: 20 m