An object that is 0.5 m above the ground has the same
amount of potential energy as a spring that is stretched 0.5
m. Each distance is then doubled.
How will the potential energies of the object and the spring
compare after the distances are doubled?
The gravitational potential energy of the object will be
two times greater than the elastic potential energy of the
spring
The elastic potential energy of the spring will be four
times greater than the gravitational potential energy of
the object
The elastic potential energy of the spring will be two
times greater than the gravitational potential energy of
the object
The potential energies will remain equal to one another

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.

a=d/t

a="triangle"v/t

explanation:

a = acceleration

option number c is the right answer.