When an object is in a gravitational field, it has energy in its energy store. What two words complete the sentence?

Niobium forms a substitutional solid solution with vanadium. compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 24 wt% nb and 76 wt% v. the densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3, respectively

Why there is no inductive reactance in dc circuits

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley