The water table is the
a. upper boundary of the zone of saturation.
b. zone of aeration.
c. lower boundary of the zone of saturation.
d. aquifer.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

The solid that is formed and usually sinks to the bottom of a solution is the