Answer:
Volume \[(v)=2m\times 2m\times 2m\] \[=8\,{{m}^{3}}\] density \[(d)=1000\,\,kg/{{m}^{3}}\] time \[(t)=5\times 60\,\,\sec \] depth \[(h)=30\,m\] power \[(P)=?\] \[P=\frac{w}{t}=\frac{mgh}{t}\frac{vdgh}{t}\] \[\Rightarrow P=\frac{8\times 1000\times 10\times 30}{5\times 60}\] \[=8000\,w\] \[=8\,kw\]
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