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 :
\[\frac{\delta Q}{\delta t}=\frac{KA}{L}({{T}_{1}}-{{T}_{2}})\] \[Q=\frac{KA}{L}({{T}_{1}}-{{T}_{2}})\] \[Q=m{{L}_{f}}\] \[\frac{KA}{L}({{T}_{1}}-{{T}_{2}})t=m{{L}_{f}}\] \[K=\frac{m{{L}_{f}}L}{A({{T}_{1}}-{{T}_{2}})t}\] \[K=\frac{4.8\times 3.36\times {{10}^{5}}\times 0.1}{0.36\times 100\times 3600}\] \[=\frac{4.8\times 3.36}{0.36\times 36}\] \[\text{=1}\text{.24J/m/}{{\text{s}}^{\text{o}}}\text{C}\]You need to login to perform this action.
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