Why are temperatures in the thermosphere not strictly comparable to those experienced near Earth’s surface?

Solve each equation. Round answers to four decimal places.

$$\log _x(33.4)=5$$

Evaluate the indefinite integral.

$$\int \cos ^8 \pi x \sin \pi x d x$$

The lowest and highest natural temperatures ever recorded on earth are $-127^{\circ} \mathrm{F}$ in Antarctica and $136^{\circ} \mathrm{F}$ in Libya. What are these temperatures in ${ }^{\circ} \mathrm{C}$ and in $\mathrm{K}$ ?

How does altitude influence average temperatures? Provide an example.

Compute each of the following sums and differences. a. $-7+(-2)$ b. $3+(-4)$ c. $-2-5$ d. $-1+5$ e. $4-(-2)$ f. $-7-(-8)$

Advection of which air mass(es) produces higher afternoon temperatures in Kansas City?

Evaluate the trigonometric function of the quadrant angle, if possible. $\sec 0$

The nervous system is divided into how many parts?

Prove that the product of two $2 \times 2$ stochastic matrices is a stochastic matrix.

The table shows the average surface temperatures of four planets. Which planet is the coldest? Explain.

$$\begin{matrix} \text{Planet} & \text{Jupiter} & \text{Neptune} & \text{Saturn} & \text{Uranus}\\ {Temperature(^\circ C)} & \text{-150} & \text{-220} & \text{-180} & \text{-214}\\ \end{matrix}$$

Find the solutions of the equation in the interval $[0,2 \pi)$. $\cos \left(x+\frac{\pi}{4}\right)-\cos \left(x-\frac{\pi}{4}\right)=1$

tudy the graph of religions on page 454 . How does the percentage of Sunni Muslims compare to the percentage of Shiite Muslims in the region?

Suppose that X, Y, and Z are independent Poisson random variables, each with a mean 1 . Find

a) $P(X+Y=4)$;

b) $E\left[(X+Y)^2\right]$

c) $P(X+Y+Z=4)$.