A pump lifts water from a lake to a large tank 20 m above the lake. How much work against gravity does the pump do as it transfers 5.0 m^3 if the density is?=1000kg/m^3?

The level of the water in the open aquarium tank goes down each day. why?

If iron were to bound with oxygen, predict the formula for each oxidation number of iron.

if a parachute and a stone is dropped from a certain height at once on the Moon which will reach the surface of moon

What's the three smallest celestial bodies in the universe currently?

Describe what happens to the electric field lines when two objects with unlike charges are brought near each other.

What is the relationship between the mass and period in a mass hanging on spring oscillation and why?

Saturn's moon Titan has a mass of 1.35 * 1023 kg. If Titan is 1.19 * 106 km from Saturn, and Saturn's mass is 5.86 * 1026 kg, what is the gravitational force between Saturn and its moon? 2.76 * 104 N 3.29 * 107 N 3.73 * 1021 N 4.43 * 1030 N

What has occured when bubbles form in a liquid that is being heated

What would happen to the supply of ATP in your cells if you did not eat enough carbohydrates?

According to a rule-of-thumb, every 5 seconds, between a lightning flash and the following thunder gives the distance to the flash in miles.