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Traden4Alpha
Posts: 3300
Joined: September 20th, 2002, 8:30 pm

Gravitational potential energy

May 21st, 2011, 10:46 pm

It could be zero if rapturization involves direct substitution of brimstone for bodies or uses the potential energy stored in tectonic faults (released by Earthquakes) to rapturize the chosen ones.Also, what if only the soul gets uploaded using RSS (Rapture Soul Synchronization)? (We'd better hope this god doesn't use a lossy compression algorithm)
Last edited by Traden4Alpha on May 21st, 2011, 10:00 pm, edited 1 time in total.
 
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Landscape
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Joined: July 2nd, 2010, 11:13 am

Gravitational potential energy

May 22nd, 2011, 3:54 pm

The average weight for males is 76-83 and females 54-64, lets say then that the average weight is 50 (assuming kids and elderly compensate the rest)Assuming humans have roughly the same density as water this give us that one person is 50 liters.With 7 billion people that's 350 million cubic meters, rougly corresponding to covering 1.5 times the size of disney world with swimming pools (or a sphere with 5 km (3 miles) radius) 1 cubic meter of water requires 2.55*10 kj to be converted to vapor. [EDIT: Should be 2.55*10^6 kJ]Multiplying the numbers gives 8.9*10^17 joulesWhich corresponds to the total energy from the sun that hits the earth in five seconds or (now for my answer) 4 Tsar Bombas.Since humans are not made of 100% water we should probably add a fifth bomb, but perhaps vaporization is overkill (no pun intended)...Edit: Oops, didn't read the question careful enough (serious mistake), will leave the answer anyway. Did not confuse vaporize and rapturize but was thinking of an end of the world (rather of humanity) scenario.
Last edited by Landscape on May 22nd, 2011, 10:00 pm, edited 1 time in total.
 
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DevonFangs
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Joined: November 9th, 2009, 1:49 pm

Gravitational potential energy

May 23rd, 2011, 12:15 pm

QuoteOriginally posted by: outrunOMG! Is Disney Land *that* big??I found this on Wikipedia for the first phase: getting us in GEOQuoteThe gravitational potential energy of any object in geosynchronous orbit (GEO), relative to the surface of the earth, is about 50 MJ (15 kWh) of energy per kilogram ...so getting into GEO will only cost 1/400th vaporization! Who would have thought that??Euro Disney is not bad too
 
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Landscape
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Joined: July 2nd, 2010, 11:13 am

Gravitational potential energy

May 23rd, 2011, 6:22 pm

Disney Land (LA) is about 1/50th of Disney World (Orlando) which is about 1.4 times the size of Manhattan (1/3 water included) and less than 1/10th of London.The cheapness of sending someone into GEO (really like the word and idea, thanks!) was surprising, so checked and found that1. I failed to enter 2.55*[Missing: 10^6] kJ2. I get 50 MJ / 2550 kJ (since above is per 1000 liters) = 19.6Which means that if I leave my stove on for a while with 20 liters of water and let it vaporize I could've sent it to space instead?
 
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Traden4Alpha
Posts: 3300
Joined: September 20th, 2002, 8:30 pm

Gravitational potential energy

May 23rd, 2011, 8:04 pm

QuoteOriginally posted by: outrunmmmh.. we should get this right. Or is NASA really whining about getting stuff into space? It most be much harder?Rockets are horrible horrible horrible means of getting stuff into orbit. Their efficiency is zero at liftoff and one must carry tens or hundreds of kg of fuel & equipment per kg of payload.
 
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Landscape
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Joined: July 2nd, 2010, 11:13 am

Gravitational potential energy

May 23rd, 2011, 9:18 pm

I was thinking, if I put all 20 liters in one pot instead of 1 liter I won't have to go refill it every time it vaporizes. I don't know an awful lot about anything, Wiki does, but yes I am a landscape artist.Space_elevator
Last edited by Landscape on May 22nd, 2011, 10:00 pm, edited 1 time in total.
 
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Traden4Alpha
Posts: 3300
Joined: September 20th, 2002, 8:30 pm

Gravitational potential energy

May 24th, 2011, 11:50 am

QuoteOriginally posted by: LandscapeDisney Land (LA) is about 1/50th of Disney World (Orlando) which is about 1.4 times the size of Manhattan (1/3 water included) and less than 1/10th of London.The cheapness of sending someone into GEO (really like the word and idea, thanks!) was surprising, so checked and found that1. I failed to enter 2.55*[Missing: 10^6] kJ2. I get 50 MJ / 2550 kJ (since above is per 1000 liters) = 19.6Which means that if I leave my stove on for a while with 20 liters of water and let it vaporize I could've sent it to space instead?It's a great illustration of the extreme weakness of gravity. The electrostatic attractions between atoms in 20 liters of water rivals the gravitational attraction to 5.9722 × 10^24 kg of Earth.
 
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rmax
Posts: 374
Joined: December 8th, 2005, 9:31 am

Gravitational potential energy

May 26th, 2011, 7:45 am

Tsiolkovsky rocket equation
Last edited by rmax on May 25th, 2011, 10:00 pm, edited 1 time in total.