A Metal Bar Is Used to Conduct Heat $\degree$ C and at the Other Is 20

question 5

Multiple Choice

A metal bar is used to conduct heat. When the temperature at one end is 100 $\degree$ C and at the other is 20 $\degree$ C, heat is transferred at a rate of 16 J/s. If the temperature of the hotter end is reduced to 60 $\degree$ C, what will be the rate of heat transfer?

• A) 4 J/s
• B) 8 J/s
• C) 9 J/s
• D) 12 J/s

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