9. AM 630 is a station where you can listen to sports. The frequency is 630 khz (or 630,000 hz). What is the wavelength?
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475861.044 is the wavelength

Explanation:

wavelength= speed/frequency

speed of light equals 299,792,458

and the frqeuncy equals 630

so  299,792,458/630=475861.044 equals the wavelength

unlike poles attract

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.