A tank is full of water. Find the work ( W ) required to pump the water out of the spout. (Use ( 9.8 , m/s² ) for ( g ). Use ( 1000 , kg/m³ ) as the weight density of water.)
Step 1: A layer of water ( x ) m thick which lies ( x ) m above the bottom of the tank will be rectangular with length 8 m. Using similar triangles, we can see that it will have width ____ m.
a. ( x )
b. ( 8 )
c. ( 8x )
d. ( x/8 )