It’s d. The time it takes for the water to boil. It is adding different amounts of salt to see which one will boil quicker if adding an amount of salt.
The potential energy is converted into kinetic energy. Hope this helps!
Answer: Longitudinal waves
Explanation: For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport
Hey there! :D
Cluster- a group of stars or galaxies forming a relatively close association.
<span>Constellation- A group of stars that makes a shape, and has a name that is well known.
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<span /><span>Solar system- a system of planets revolving around a center, or sun.
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Universe- the whole wide range of galaxies, stars, and solar systems that were ever formed.
The best answer would be "Cluster" because the universe is infinite, they are millions of galaxies, solar systems, and constellations in it. The question only states 'a thousand galaxies'. This is of one kind. This best works for the question.
I hope this helps!
~kaikers
