Answer:
h = 0.362 m
Explanation:
The pressure equation with depth is
P₂ =
+ρ g h
The gauge pressure is
P2 -
= ρ g h
This is the pressure that muscles can create
P₂ -
= 3740 Pa
But still the person needs a small pressure for the transfer of gases, so
P₂ -
= 3740 - 188 = 3552 Pa
This is the maximum pressure difference, where the person can still breathe,
Let's clear the height
h = 3552 / ρ g
h = 3552 / (1000 9.8)
h = 0.362 m
This is the maximum depth where the person can still breathe normally.
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<span>A motor produces less mechanical energy than the energy it uses because the motor looses some energy to heat.</span>