Describing Waves 1. Try to wave your hand and observe the motion of your hand.
Q1-Do you make a side-to-side motion with the palm of your hand? Do you do
an up-and-down motion with your hand2 (side to side, up and down)
Q2 Describe your personal hand wave.

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 focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?