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In a white dwarf, what is the source of pressure that halts its contraction as it cools?
Real Cost
The total cost of manufacturing or providing a service, including all direct and indirect costs.
Marginal Cost
The cost of producing an additional unit of a product, highlighting the concept of increment in total cost with an increase in production.
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The fee that educational institutions charge for instruction.
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Physical or electronic publications consisting of written, printed, or illustrated work bound together for reading or study.
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