A) \[1.24J/m/s/{}^\circ C\]
B) \[1.29\text{ }J/m/s/{}^\circ C\]
C) \[2.05\text{ }J/m/s/{}^\circ C\]
D) \[1.02\text{ }J/m/s/{}^\circ C\]
Correct Answer: A
Solution :
\[\frac{\delta Q}{\delta t}=\frac{KA}{L}({{T}_{1}}-{{T}_{2}})\] |
\[Q=\frac{KA}{L}({{T}_{1}}-{{T}_{2}})\] |
\[Q=m{{L}_{f}}\] |
\[\frac{KA}{L}({{T}_{1}}-{{T}_{2}})t=m{{L}_{f}}\] |
\[K=\frac{m{{L}_{f}}L}{A({{T}_{1}}-{{T}_{2}})t}\] |
\[K=\frac{4.8\times 3.36\times {{10}^{5}}\times 0.1}{0.36\times 100\times 3600}\] |
\[=\frac{4.8\times 3.36}{0.36\times 36}\] |
\[=1.24J/m/{{s}^{o}}C\] |
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