Which type of electromagnetic wave is used for nuclear power and medical treatment? (

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?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Identify some abiotic characteristics of the tundra biome.