Sunday, February 26, 2012

AP Environmental Science Word Problem? Please Help!!?

Some people have proposed that the earth could solve its population problem by shipping people off to space colonies, each containing about 10,000 people. Assuming that we could build such large-scale, self0sustaining space stations, how many people would have to be shipped off each day to provide living spaces for the 82 million people being added to the earth's population each year? Current space shuttles can handle about 6 to 8 passengers. If this capacity could be increased to 100 passengers per shuttle, how many shuttles would have to be launched per day to offset the 82 millions people being added each year? According to your calculations, determine whether this proposal is a logical solution to the earth's population problem



I really have to idea how to even begin this problem. My teacher mentioned something about dimensional analysis but if anyone knows how to solve this problem, can you please help me out? Thanks Alot!!!AP Environmental Science Word Problem? Please Help!!?82,000,000 divided into 100 person segments is 820,000 shuttles that would have to launch to over 82 colonies.



Since there are 82 million people being added each year, and the problem requires you to make space for them, that means that in a given year you'd have to launch 820,000 shuttles, each carrying 100 people. That equates to 2,247 (rounding up) shuttles a day carrying people to the colonies. You'd have to be adding colonies constantly though, as there is nothing slowing the birthrate on earth.



Considering the real-world cost of fueling and launching a shuttle into space, I don't think there are enough countries in the world that would be willing to embark on such an ambitious project, and therefore, it's not really a logical solution, in my opinion.

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