If 30 KJ of Heat Flows Out of a System

question 4

Multiple Choice

If 30 kJ of heat flows out of a system and 15 kJ of work is done by the system,then what is the change in internal energy?

• A) 85 kJ
• B) 70 kJ
• C) 45 kJ
• D) 15 kJ
• E) 10 kJ

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Definitions:

Short Run

A period in economics where at least one factor of production is fixed, leading to limited adjustments in production or operation.

Long Run

An economic phase where every production factor and cost can adjust completely to alterations, due to their variable nature.

Most Efficient Output

The level of production at which a firm or economy can produce goods at the lowest average cost, maximizing efficiency.

Profit-Maximizing

The process by which a company determines the price and output level that returns the highest profit.