A hydroelectric dam holds back a lake of surface area 3. 0×106m2 that has vertical sides below the water level. The water level in the lake is 150 m above the base of the dam. The density of water is 1000 kg/m3.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

What is the leading cause if water scarcity throughout much of the world

What does the cyclopes invite odysseus back to the island