Answer:
The reason we can't feel it is that the air within our bodies (in our lungs and stomachs, for example) is exerting the same pressure outwards, so there's no pressure difference and no need for us to exert any effort.
A full set of adult human teeth numbers 32 .
Formula:
F = ma
F: force (N) m: mass (kg) a: acceleration (m/s^2)
Solution:
F = ma
F = 20 × 10
= 200N
Answer: 4550 Joules
The formula for potential energy in gravitational field is as follows:

If you decrease the pressure of a fixed amount of gas, its volume will increase.