Compute 
where 
and 
, oriented outward.
Definitions:
Oxygen Concentration
The amount of oxygen present in a given environment, crucial for the respiration processes in aerobic organisms and in various industrial applications.
Tidal Volume
The volume of air moved into or out of the lungs during a normal breath, essential in respiratory physiology.
Vital Capacity
The maximum amount of air a person can exhale after maximum inhalation, used to assess the health of the respiratory system.
Hemoglobin
A component of red blood cells, tasked with ferrying oxygen from the lungs to various bodily locations.
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