The distance from one compression in a sound wave to the next compression is defined as the amplitude wavelength frequency period

More solar radiation is absorbed by earth’s surface than by

When doing scientific research ,the sources used should be ?

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.)