A student spends 2 hours one night recording the movement of the Big Dipper constellation compared to a tree on the north side of the yard.
During that time, the Big Dipper appears to move higher above the tree.
How should the student explain the movement of the Big Dipper constellation?

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

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?