Aluminum Rod #1 Is 1

question 42

Multiple Choice

Aluminum rod #1 is 1.0 m long with cross-section area 2.0 cm². Aluminum rod #2 is 2.0 m long with cross-section area 4.0 cm². Aluminum rod #3 is 3.0 m long with cross-section area 9.0 cm². If each rod has the same temperature difference applied across its ends, which rod has the greatest rate of transfer of energy between its ends?

• A) #1
• B) #2
• C) #3
• D) #2 = #3, both greater than #1
• E) They each have the same rate.

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