What energy keeps the water cycle going? Evaporation powers the water cycle because the vapor rises up to the clouds and condenses.
The wind's energy blows the clouds around the earth's atmosphere and causes the water cycle.
The air's energy cools water vapor, condensation occurs, and precipitation falls.
The sun's energy heats the earth's surface causing water to heat and evaporate.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)