Element x has five valence electrons, element y has one valence electron, and element z has one valence electron. which two of these elements are most likely to have similar properties? explain your answer.

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?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon