#$1$ Wind blows over the house shown. A window on the ground floor is open. Does the wind blowing over the chimney, cause air to flow in through the window and out the chimney, or in through the chimney and out the window? For full points, you must explain how you determined your answer.

#$2$ A mass connected to a spring that is undergoing horizontal simple harmonic motion has the position$-$versus$-$time graph shown.

$x(cm{)}_{\text{u}\text{a}\text{r}\text{r}}$

$($a$.)$ What is the period of the motion? Hint: There's a more precise way than just estimating where the cycle ends. The period is not $2\mathrm{.}5$ s $.$

$($b$.)$ What is the amplitude of the motion?