You have the job of finding out how multiple factors influence the rate at which thermal energy is conducted through a cylindrical rod. You are given the following equipment:

• Copper rods 1.0 cm in diameter and 10 cm, 20 cm, 30 cm, and 50 cm in length

• Aluminum rod 1.0 cm in diameter and 20 cm in length

• Steel rods 20 cm in length with a square cross-sectional area; 0.25 cm, 0.50 cm, 0.75 cm, and 1.0 cm in diameter

• Temperature sensor

• Wax

• Bunsen burner

• Hot plate

• Ice

• Water

• Beaker

• Stopwatch

• Other standard lab equipment

The first investigation is to determine the relationship between the path length and the rate of thermal energy transfer.

(A) List the items you would use to perform this investigation.

(B) Outline the experimental procedure you would use to gather the necessary data. Indicate any measurements taken, and how the measurement will be used. Make sure your outline contains sufficient detail so that another student could follow your procedure and duplicate your results.

(C) On the axis, sketch the relationship you expect to find from this investigation. Explain why you expect this relationship.