On a Cold Winter Day,the Outside Temperature Is -20°C and the Inside

question 47

Multiple Choice

On a cold winter day,the outside temperature is -20°C and the inside temperature is maintained at 20°C.There is a net thermal energy flow to the outside through the walls,roof,etc.,of 25 kW.What is the rate of increase of the entropy of the universe as a result of this energy flow?

• A)13 W/K
• B)25 W/K
• C)85 W/K
• D)99 W/K
• E)0 W/K

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Definitions:

ATP

Adenosine triphosphate, a molecule that carries energy within cells, essential for various cellular functions.

Mitochondrion

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has its own DNA.

Phagocytic Cell

A type of immune cell capable of engulfing and absorbing bacteria, other foreign bodies, and sometimes dead cells.

Macrophage

A macrophage is a type of white blood cell part of the immune system, capable of phagocytosis, engulfing and digesting cellular debris, foreign substances, microbes, and cancer cells.