Examlex
An electrical power plant manages to send 90% of the heat produced in the burning of fossil fuel into the water-to-steam conversion.Of the heat carried by the steam,40% is converted to the mechanical energy of the spinning turbine.Which of the following choices best describes the overall efficiency of the heat-to-work conversion in the plant (as a percentage) ?
James Baldwin
An influential African American writer and activist known for his essays, novels, and plays that explore complexities of racial, sexual, and class distinctions in Western societies, particularly in mid-20th-century America.
Sociological Trend
Patterns or changes observed within societies over time, often studied to understand social behavior and societal evolution.
Black Pathology
A controversial term that refers to the study and characterization of diseases prevalent within African American communities, often used in a discriminatory context to generalize negative behaviors.
Cultural Identity
The sense of belonging or attachment to a group or culture, shaped by shared traditions, languages, and experiences.
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