A. If you set a cannonball to 1500 m/s, what happens? Explain why you think it moves this way.

The softest and hardest minerals are: softest hardest

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

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this