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An airtight box, having a lid of area 80.0 cm2, is partially evacuated.Atmospheric pressure is 1.01 x 105 Pa.A force of 108 lb is required to pull the lid off the box.The pressure in the box was:
Phenomena
Observable events or occurrences that can be investigated scientifically to understand their underlying principles.
Theory
An organized system of assumptions and principles that purports to explain a specified set of phenomena and their interrelationships.
Informed Consent
The doctrine that anyone who participates in human research must do so voluntarily and must know enough about the study to make an intelligent decision about whether to take part.
APA Code
The ethical guidelines set by the American Psychological Association for psychologists.
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