The most common type of lighting unit utilized in street lighting is: a. metal halide lamps b. mercury vapor lamp c. high-intensity sodium vapor lamp d. incandescent lamp

Newton's law of universal gravitation states that the force f between two masses, m1 and m2, is given below, where g is a constant and d is the distance between the masses. find an equation that gives an instantaneous rate of change of f with respect to d. (assume m1 and m2 represent moving points.)

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?