Which is greater in the united states today, the income gap or the wealth gap? - i have a hard time understanding questions like this, can you explain as well? you!

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

As the distance from a magnet increases, what happens to the magnet force?

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)