Examlex
A heat engine that in each cycle does positive work and loses energy as heat, with no heat energy input, would violate:
Cross-Sectional
Describes a study design that analyzes data from a population, or a representative subset, at a specific point in time.
Cross-Sectional Method
An observational research method that analyzes data from a population, or a representative subset, at a specific point in time.
Longitudinal
A research design in which the same subjects are observed or tested repeatedly over a period of time.
Correlational
Referring to a type of research design that examines the relationship between two or more variables to determine if they are associated in some way.
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