The Graph Shows Temperature as a Function of Thickness in Three

question 38

Multiple Choice

The graph shows temperature as a function of thickness in three adjacent slabs of material of equal thickness. Assuming the heat transfer through the compound slabs is in a steady state, what can you say of these materials?

• A) material 1 is the best insulator
• B) material 2 is the best insulator
• C) material 3 is the best insulator
• D) all are equally good insulators
• E) It is impossible to determine which is the best insulator.

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Definitions:

Evaluative

Involving value judgments, as opposed to simply being descriptive.

Basic

Constituting an essential foundation or starting point; fundamental characteristics or principles of something.

Pythagoras

An ancient Greek philosopher and mathematician who is credited with significant developments in mathematics, astronomy, and the theory of music.

Numbers

Abstract entities that represent quantities, positions, or values in mathematics, enabling the measuring, labeling, and ordering of objects and ideas.