Frank stands still while throwing a dart toward a target with a speed of 25 m/s. what is the speed of the dart observed by frank compared to the speed observed by a stationary observer? the speed is 25 m/s for both people. the speed is greater than 25 m/s for frank only. the speed is greater than 25 m/s for the observer only. the speed is less than 25 m/s for both people.

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.