Westinghouse and edison fought what was known as the war of the currents. eventually, westinghouse triumped using alternating current for power distribution. alternating current is better for power generation because a) direct current is unsafe. b) alternating current produces flutuating magnetic fields. c) alternating current provides a more constant current flow. d) direct current cannot be produce electricity without a battery.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

answerscientific theory;