Calculate the efficiency of a four wheeled Pulley system if it is used to lift a load of 500N by using an effort of 300N

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

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

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.