If you take 42.0 meters of string and ball it up and put it on a scale you measure that it weighs 18.8 grams. if you tighten a length of this same string to a tension of 8.5 newtons, what is the wave speed for waves that would travel on this string when you plucked it?

137.74 m/s

Explanation:

= length of the string = 42 m

 = mass of the string = 18.8 g = 0.0188 kg

Linear mass density is given as

 = 0.000448 kg/m

 = wave speed

 = Tension force in the string = 8.5 N

Wave speed is given as

 = 137.74 m/s

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.