Two points of mass m are joined by a rigid weightless rod of length l, the center of -/ which is constrained to move on a circle of radius a. express the kinetic energy in generalized coordinates

How many molecules are present in 3 mols of silicon dioxide (sio2)?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.