Question

At the surface, atmospheric pressure is 1.013 × 10^5 Pa. People can normally snorkel down to a depth of roughly one meter. What is the additional pressure on the air in their lungs? (Assume they are diving in fresh water.)

Please correctly explain the answer

Answer 1

1.01 × 10⁵ Pa

Step-by-step explanation:

At the surface, atmospheric pressure is 1.013 × 10⁵ Pa.

We need to find the total pressure on the air in the lungs of a person to a depth of 1 meter.

Pressure at a depth is given by :

`P=\rho gh`

Where

`\rho` is the density of air,
`\rho=1.225\ kg/m^3`

So,

`P=1.225* 9.8* 1\\\\=12\ Pa`

Total pressure, P = Atmospheric pressure + 12 Pa

= 1.013 × 10⁵ Pa + 12 Pa

= 1.01 × 10⁵ Pa

Hence, the total pressure is 1.01 × 10⁵ Pa.