A vertical spring-mass system undergoes damped oscillations due to air resistance. The spring constant is 2.15 ✕ 104 N/mand the mass at the end of the spring is 10.7 kg. (a) If the damping coefficient is b = 4.50 N · s/m, what is the frequency of the oscillator?Hz
(b) Determine the fractional decrease in the amplitude of the oscillation after 7 cycles.

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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.

radiation

explanation:

heat is transmitted by radiation