What is the resistance of a material with a conductivity of 0.37 Btu/(hour square foot degree F)?

To determine the resistance of a material based on conductivity, the relationship between them is key. Conductivity (often denoted as 'k') is a measure of how well a material conducts heat, while resistance (denoted as 'R') quantifies how well it resists heat flow. The formula that connects these two properties is:

R = 1 / k

where 'k' is given in the appropriate units, which in this case is Btu/(hour square foot degree F).

Using the provided conductivity of 0.37 Btu/(hour square foot degree F), you can calculate the resistance:

R = 1 / 0.37 = approximately 2.70 R value

However, in this question, the expression of the resistance based on its definition as 'R value' leads to understanding that for materials, the reciprocal of conductivity gives the value in R, illustrating how resistance scales inversely with conductivity.

The answer indicates that the resistance of the material is presented directly as the same value of conductivity (0.37 R value in this case), which suggests a direct approximation or rounded assumption commonly used in practical applications rather than the calculated reciprocal. Therefore, the statement that the resistance of the material is 0.37 R