Arock is held under water in a pond and is dropped from rest. while it sinks to the bottom of the pond, what happens to its motion? (more than one may be correct, so choose as many as are correct.)

select one or more:
a. the acceleration decreases.
b. the velocity increases and then decreases.
c. the velocity decreases and then increases.
d. the velocity of the rock decreases until it reaches terminal velocity.
e. the friction on the rock decreases as it approaches terminal velocity.
f. the acceleration of the rock in the water depends on its weight.
g. none of the above.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.