Aspring with constant k=40.0 n/m is at the base of a frictionless, 30.0 degree- inclined plane. a 0.50-kg block is pressed against the spring, compressing it 0.20m from its equilibrium position. the block is then released. if the block is not attached to the spring, how far up the incline will it travel before it stops?

0.326 m

Explanation:

Given mass = 0.5 kg

spring constant K = 40 N/m

Angle of plane

The initial energy is given by

And the final energy is given by

According to energy conservation

Initial energy = final energy

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

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.