You are sitting in a commercial jetliner. it is on the runway and ready to take off. before it does, clever soul that you are, you hang a .5 meter long string from the ceiling just overhead and attach to its free end a weight whose mass is m = .05 kg. the jet begins its acceleration. as it does, the string and mass swing toward you until the string comes into equilibrium at a constant angle of θ = 26o with the vertical.

a.) what is the jet's acceleration?

b.) once the jet gains altitude and proceeds with a constant velocity, what will the string and mass be doing (that is, will the 26o angle have changed)? explain

a.=4.78 m/s2

b. the thread will remain vertical

Explanation:

a.

For jet acceleration as you know,

Weight due to gravity given as

F= w =mg

and body movement with acceleration as

F= ma

Its acceleration of plane

b.

For planes attaining constant velocity

a = 0  and tan∅ = 0

so Ф = 0

hence the thread will be remain vertical

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

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.