What distance does electromagnetic radiation travel in 0.45 ps ?

Explanation:

The distance traveled by electromagnetic radiation is given by:

where

v is the speed of the radiation

t is the time elapsed

Electromagnetic radiation travels at the speed of light, which is equal to:

The time elapsed in this problem is

Substituting into the equation, we find

which corresponds to

ok

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.