Nuclear energy is currently used in which three kinds of vehicles? A. cars, submarines, spacecraft
B. submarines, ships, spacecraft
C. spacecraft, airplanes, cars
D. airplanes, submarines, ships

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?

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current

What property of an object determines its inertia?