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1. A 2.50 kg mass is hung at rest on the end of a spring held vertically from a rod. The initial
displacement of the mass is 0.065 m and the spring has a spring constant of 3 N/m. When the
spring-mass system is oscillating, the period of oscillation is -
7
a. 0.91 s
b. 1.10 s
c. 5.23 s
d. 5.74 s

asthenosphere and convection

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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