Magnesium has a charge of 2, and chlorine has a charge of -1. To form a chemical bond, how many magnesium ion(s) would the compound have?

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

When you turn on a battery-operated device, an electrical circuit is

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor