Answer the blank: What do elements,, and mixtures have in common?
I'll give you a hint
They are all made up of two or more elements and they could both be separated and then mixed with different elements to make a new mixture and compound.

What is the momentum of a 2 kg object moving at 15 meters per second

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

A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.