Africtionless block of mass 2.10 kg is attached to an ideal spring with force constant 250 n/m . at t=0 the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 13.0 m/s .
part afind the amplitude. submitmy answersgive uppart bfind the phase angle.

Explanation:

Given

mass of block

spring constant

speed of block at t=0 is

natural Frequency of oscillation

Suppose

where

at t=0 spring is neither compressed

Amplitude is given by

at t=0 x=0 i.e. at mean Position

at

therefore

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.

what is the actual question though?