What combines to form bonds in compounds? a. atoms of elementsb. moleculesc. types of mineralsd. valences

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

What types of radiation make up the electromagnetic spectrum?

Is the number of complete movements of a wave per second.