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| Deceleration's 100 math problems thread!; Absolute torture... | |
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| Tweet Topic Started: Aug 4 2011, 04:22 AM (5,610 Views) | |
| Spar | May 3 2012, 03:18 PM Post #181 |
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Wandering Scavenger
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Recently I've started getting news from a South Korean newspaper, Seoul Shinmun, but I've gotten a lot of news from newspapers and news sites run by Switzerland, India, China, Britain, and South Africa. I like to have a mix of different countries, preferably of varying degrees of favor towards the US, as it offers different takes and is less likely to be misreported or covered up completely. |
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| Deceleration | May 3 2012, 10:45 PM Post #182 |
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Coreling Conquerer
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I came up with a few more questions, though it's not like I'm keeping track anymore, as people don't seem to want to answer several perfectly good ones I made before. Please note you must find 27 to find 28, and 29 to find 30. Question 27 Calculate the mass of the Earth given that its radius is about 6400 kilometers and the acceleration due to gravity at the surface is about 9.8 meters per second2. As in, a 1 kilogram object should weight 9.8 newtons at the surface. Question 28 Calculate the Earth's average mass given its mass (see previous question) and its radius. Put your answer in kilograms per cubic meter. Question 29 500 grams of antimatter annihilates 500 grams of matter in a reactor. Find out how much energy is released, in joules. Use an equation, I guess. It's pretty well known, E=mc2? Though this is all hypothetical. Question 30 95% of the energy from the reactor in question 29 is used to move a trillion kilogram spaceship. If the spaceship starts from rest, at what velocity will it be moving after the reaction? Edited by Deceleration, May 3 2012, 11:59 PM.
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| Brayzure | May 4 2012, 10:15 AM Post #183 |
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The Analytic Commander
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Damn, physics stuff... |
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| Deceleration | May 4 2012, 06:30 PM Post #184 |
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Coreling Conquerer
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Yay physics! I worked all four out with nothing but my old scientific calculator during five minutes in Physics when I was supposed to be studying for the final. I also have some ideas for number 31, but nothing specific yet. |
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| Brayzure | May 6 2012, 11:48 PM Post #185 |
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The Analytic Commander
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Well unfortunately, I can't take Physics until senior year... |
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| Camo5 | May 7 2012, 07:13 PM Post #186 |
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Resident BorgCube
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Too lazy...maybe later. |
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| wat | Aug 16 2012, 12:10 AM Post #187 |
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Walrus.
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Hm. I going to see if Albert Einstein knows the answer to that. |
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| Brayzure | Aug 16 2012, 01:01 AM Post #188 |
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The Analytic Commander
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Cryostasis much? |
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| wat | Aug 16 2012, 01:49 AM Post #189 |
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Walrus.
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Anyone have a dictionary? |
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| Deceleration | Aug 16 2012, 02:59 AM Post #190 |
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Coreling Conquerer
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No. What do dictionaries have to do with my math problem? |
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11:50 PM Jul 10