It is often revealed <span>at the resolution of the story, when the reader can see how the story ends.</span>
Answer:

Explanation:
First of all, we can find the speed of the sound wave, which is given by:

where
f = 645 Hz is the frequency
is the wavelength
Substituting,

Now we can find the temperature of the air by using the following relationship:

where T is the temperature in Celsius degrees. Since we know v = 322.5 m/s, we can re-arrange the formula to find the temperature:

Answer:
A topographic map is a map that indicates the features of the land's surface, such as mountains, hills, and valleys. This is usually done with wavy lines that represent the curves and elevation of the land.
That can only be happening if the mass mysteriously increased somehow. I'd like to know how in the world THAT happened.