Answer: is constant
Explanation:
In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.
Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.
This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.
Subsistence farming, form of farming in which nearly all of the crops or livestock raised are used to maintain the farmer and the farmer's family, leaving little, if any, surplus for sale or trade. Preindustrial agricultural peoples throughout the world have traditionally practiced subsistence farming<span>.</span>
Answer:
5. If you were in charge of advertising and marketing a cruise ship, what are some of the strategies that you would use?
Cruise ships are particularly popular among high income, middle aged and older individuals. For this reason, I would focus on advertising that reaches out to that audience. Television ads would therefore be relevant because this group of people still uses television as one of their main sources of entertainment, unlike many millennials and centennials.
Another strategy that could work is social media ads, specially in those platforms that are used by people from this age group.
What elements of the cruise ship would you highlight or feature in your ads?
I would highlight elements that make the cruise ship interesting for my target audience: facilities, activities, accommodation, food and drink. I could also show some testimonials from people who had already partaken in one of the cruise ships travels, because experience from other people tend to influence potential customers a lot.
