20 point 1. During her speed walking training session, Megan walks 1200 m in
450 seconds. a) What is her speed in m/s?( Round your answer to the
nearest tenth) b) Using the conversion factors 1m = 3.3 ft, 5280 ft = 1
mile, and 1 hour = 3600 s, determine Megan's speed in miles per hour. *

50 inches should be the resultant vector

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.

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