We Can Breathe in and Out as Long as the Pressure

question 40

Essay

We can breathe in and out as long as the pressure between the outside and the inside of the lungs is lower than 0.05 times normal atmospheric pressure. How deep can we snorkel in sea water with density ñ = 1.025 × 10³ kg/m³, and in fresh water with density ñ = 1.0 × 10³ kg/m³?

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Definitions:

Night Terrors

A sleep disorder causing feelings of terror or dread, commonly occurring in children, which can lead to screaming, flailing, and even sleepwalking during sleep.

Hypersomnia

Disorder of falling asleep at inappropriate times, or a difficulty staying awake.

Lucid Dreams

Dreams in which the dreamer is aware that they are dreaming and may have some control over the dream's content, narrative, and environment.

Hypnogogic Hallucinations

Vivid sensory experiences that occur at the onset of sleep, often involving visual, auditory, or tactile sensations.