Virtual University Of Pakistan Network
(or Joule per second or ) is the SI unit of power. So megawatt is a valid unit of power (expressing power with order of magnitude ) and is used mainly in commercial statements.
Definition: Power means the quantity of energy consumed or produced per unit time.
So actually makes no sense since it expresses the quantity of energy consumed or produced per unit time per unit time i.e. the quantity of energy consumed or produced per unit time squared. In other words it refers to the rate of change in power generation.
Newton's balls or Executive Ball Clicker
Newton's cradle can be modeled with simple physics and minor errors if it is incorrectly assumed the balls always collide in pairs. If one ball strikes 4 stationary balls that are already touching, the simplification is unable to explain the resulting movements in all 5 balls, which are not due to friction losses. For example, in a real Newton's cradle the 4th has some movement and the first ball has a slight reverse movement. All the animations in this article show idealized action (simple solution) that only occurs if the balls are not touching initially and only collide in pairs
just example nw think what would be the answer