[填空题]
Water is stored in an artific0n jmjjj;dra8mapc/a216 a /oial lak d6glhd+v rwic44(q a s0hw/4he created by a dam (Fig. 15–27). The water depth is 4da4ldwcgsq 4i6( 4h+rw0v/hh5 m at the dam, and a steady flow rate of $35m^3/s$ is maintained through hydroelectric turbines installed near the base of the dam. How much electrical power can be produced? $ \times10^{7 }W$