Four identical rods with insulated sides meet at a point O . Heat flows into O from rod A at 3 J s − 1 and from rod B at 5 J s − 1 , and flows out toward C at 4 J s − 1 . Find the rate in J s − 1 at w

Question

Four identical rods with insulated sides meet at a point $O$ . Heat flows into $O$ from rod $A$ at 3 J $s^{- 1}$ and from rod $B$ at 5 J $s^{- 1}$ , and flows out toward $C$ at 4 J $s^{- 1}$ . Find the rate in J $s^{- 1}$ at which heat flows out of $O$ along rod $D$ .

Answer:

4

Solution:

In steady state, the heat into $O$ equals the heat out: $3 + 5 = 4 + Q_{D}$ . $Q_{D} = 4$ J $s^{- 1}$ .

TestHub · Accepted Answer

In steady state, the heat into O equals the heat out: 3 + 5 = 4 + Q D ​ . Q D ​ = 4 J s − 1 .

Physics - Heat & Thermo Question with Solution | TestHub

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