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Transcribed Image Text:Two identical metal rods of rectangular cross-section are welded end-to-end as shown in panel (a)
of the figure below. 10 J of heat flows through the rods in 2 min. How long would it take for 30 J
to flow through the rods if they were welded as shown in panel (b) of the figure below?
(a)
0 °C
0 °C
(b)
100 °C
100 °C
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