A Heat Engine with an Output of 300 W Has

question 45

Multiple Choice

A heat engine with an output of 300 W has an efficiency of 25% and works at 10 cycles/s.How much heat is absorbed (Q_h) and how much rejected (Q_c) in each cycle?

• A)Q_h = 150 J,Q_c = 120 J
• B)Q_h = 1500 J,Q_c = 1200 J
• C)Q_h = 40 J,Q_c = 10 J
• D)Q_h = 120 J,Q_c = 90 J
• E)Q_h = 1200 J,Q_c = 900 J

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Definitions:

Receptor Molecules

Proteins located on the cell surface or within cells that bind specific substances, triggering a biological response.

Up-regulation

refers to the process of increasing the response to a stimulus, often involving an increase in the number of receptors on a cell's surface.

Receptor Sites

Specific locations on cell surfaces or within cells where molecules, such as hormones or neurotransmitters, bind to elicit a response.

Membrane-bound Receptor Model

A theory describing how specific proteins located on the cell membrane bind to external molecules, triggering a response inside the cell.