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Calculate the pressure in a water bubble of diameter 0.04 cm, and compare that with the pressure in the same diameter bubble of water-and-surfactant, which reduces surface tension by half. The surface tension of water is ó = 0.073 N/m.
Preconscious State
A part of the mind that contains thoughts and feelings that are not currently in conscious awareness but can be accessed by attention.
Theories of Dreams
Various models and explanations about why dreams occur and what they mean, ranging from psychoanalytic interpretations to neurobiological theories.
Marijuana Legalized
The process by which the legal restrictions on the use, possession, sale, and cultivation of marijuana are removed.
Stages of Sleep
The distinct phases of sleep that people cycle through multiple times each night, including REM and several stages of NREM sleep.
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