Which combination of elements below will bond ionically and in the same ratio as potassium when it bonds to oxygen? *
carbon and oxygen
O cesium and sulfer
calcium and nitrogen
O magnesium and oxygen
sodium and chlorine

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply