This photo shows a snow-covered area in the middle latitudes on a sunny day in late winter. Assume that 1 week after this photo was taken, conditions were essentially identical, except that the snow was gone. Would you expect the air temperatures to be different on the two days? If so, which day would be warmer? Suggest an explanation .

A hat falls off a man’s head and lands in the snow. Draw a motion diagram representing the motion of the hat as seen by the man.

Snow is falling in two cities. The function C(t) = 2t + 8 represents the amount of snow on the ground, in centimeters, in Carlisle t hours after the snowstorm begins. There was 8 cm of snow on the ground in York when the storm began and the snow accumulates at 1.5 cm per hour. a. Define a function Y(t) that represents the amount of snow on the ground after t hours in York and then complete the tables.

$$\begin{array}{|c|c|c|} \hline {\text { Carlisle }} \\ \hline \mathrm{t} & \mathrm{C(t)}=\mathrm{2 t + 8} & (\mathrm{t}, C(t)) \\ \hline 0 & & \\ \hline 1 & & \\ \hline 2 & & \\ \hline \end{array}$$

$$\begin{array}{|c|c|c|} \hline {\text { York }} \\ \hline \mathrm{t} & \mathrm{Y(t)}= & (\mathrm{t, Y(t))} \\ \hline 0 & & \\ \hline 1 & & \\ \hline 2 & & \\ \hline \end{array}$$

b. Graph and label the two cost functions for all appropriate domain values. c. Compare the graphs. How are they alike? How are they different?

Which of the two poems, "Stopping by Woods on a Snow Evening" and "Mending Wall,"  made the most powerful impression on you? Discuss.

Correct the word in italics. If the word is correct, write C./ _____Blizzards *take *with them a lot of snow, wind, and low temperatures.

In 1947, Mount Locke, Texas, had 23.5 inches of snow-its greatest yearly snowfall. The greatest monthly snowfall recorded was 20.5 inches, which occurred in January, 1958. Since the record wasn't broken in 1958, how many more inches of snow could Mount Locke, Texas, have had that year?

A skier gliding across the snow at $3.0 \mathrm{~m} / \mathrm{s}$ suddenly starts down a $10^{\circ}$ incline, reaching a speed of $15 \mathrm{~m} / \mathrm{s}$ at the bottom. Friction between the snow and her freshly waxed skis is negligible.
a. What is the length of the incline?
b. How long does it take her to reach the bottom?

Pulling a sled A child pulls a sled through the snow by exerting a force of $20$ pounds at an angle of $40^{\circ}$ with the horizontal.

A bullet weighing 245 grains is moving at a speed of $2.52 \times 10^3 ft/s$. Calculate the kinetic energy of the bullet in joules and in calories. One grain equals 0.0648 g.

Match the story with the correct graph. The graphs are labeled (a), (b), (c), and (d). As the blizzard got worse, the snow fell harder and harder.

A skier weighing 90 kg starts from rest down a hill inclined at $17^{\circ}.$ He skis 100 m down the hill and then coasts for 70 m along level snow until he stops. Find the coefficient of kinetic friction between the skis and the snow. What velocity does the skier have at the bottom of the hill?

The snow depth in a particular location varies throughout the winter. In a typical winter, the snow depth in inches might be approximated by the following function.

$$f(x)=\left\{\begin{array}{ll} 6.5 x & \text { if } 0 \leq x \leq 4 \\ -5.5 x+48 & \text { if } 4<x \leq 6 \\ -30 x+195 & \text { if } 6<x \leq 6.5 \end{array}\right.$$

Here, x represents the time in months with x=0 representing the beginning of October, x=1 representing the beginning of November, and so on. In what months does the snow begin and end?

Skunk cabbage. Unlike most other plants, skunk cabbage can regulate its internal temperature (set at $T=22^{\circ} \mathrm{C}$ ) by altering the rate at which it produces energy. If it becomes covered with snow, it can increase that production so that its thermal radiation melts the snow to re-expose the plant to sunlight. Let's model a skunk cabbage with a cylinder of height $h=5.0 \mathrm{~cm}$ and radius $R=1.5 \mathrm{~cm}$ and assume it is surrounded by a snow wall at temperature $T_{e n v}=-3.0^{\circ} \mathrm{C}$ (Fig. 18.39). If the emissivity $\varepsilon$ is $0.80$, what is the net rate of energy exchange via thermal radiation between the plant's curved side and the snow?

Identifying Adverb Phrases. Underline each adverb phrase and circle the word it modifies. The heavy snow stopped in the late morning.