Rosie is reading an article about living cells. the article states that all living cells are composed of one or more cells, that the cell is the basic unit of structure, function, and organization in all organisms, and that all cells come from pre-existing, living cells. is rosie reading about the cell theory or the cell law?

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Select the three ways that the parallel-plate capacitor differs from a car battery.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.