If a musical instrument such as a trumpet or flute is “flat”, should the pipe be lengthened or shortened? Explain with at least 2 content related sentences.

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i.e., a subspace of r 3 ). explain your reasoning

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8