After taking off from john f. kennedy airport, an airplane travels 500 kilometers due north and then 700 kilometers west. what is its total displacement?

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?