Awater pump pumps 3 kg of water every second from the bottom of the well to the top of the well 50 m above if the pump uses 2000w of electrical power to accomplish the task what is the efficiency of the pump

What is created when solids,liquids,an gases mix with one another

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)

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?