Asteroid-sample return shows water on its rocks’ surface. A cubic meter of asteroid dust may have as much as 20 liters of water. arstechnica.com/science/2…
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πŸ‘€︎ u/Sariel007
πŸ“…︎ Dec 03 2021
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If you took a cubic foot of the material from the surface of the sun and instantly transported it to your enemy's castle, what kind of damage could you expect?

In our D&D game, and due to D&D silliness, we potentially can take about a cubic foot of sun material and put it in our enemy's castle. Trying to help out our DM by getting an idea on the scale of damage this would cause to the deurgar ("evil" dwarves) and possibly an undead dragon inside. I am unsure of the size of the castle but we know it's their main base of operations so would assume it's a large castle.

I have found that the density of the hydrogen at the surface of the sun is 1.408 g/cm^(3) where as normal air is 0.001225 g/cm^(3). So we are talking about 1000x more dense. and the temperature is about 5800K vs 300K for room air. I'm guessing the super heated gas would rapidly expand and cause shockwaves causing quite a bit of damage before the heat burned everything. But the expansion would be limited and the gas would cool as it expanded. So I don't know how to figure how many joules of work would get done here.

Any help would be appreciated.

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πŸ‘€︎ u/sushi_hamburger
πŸ“…︎ Jan 16 2022
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Found in Castleton, Peak District, UK. Crystals are cubic, with slight iridescent surface.
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πŸ‘€︎ u/NitronRob
πŸ“…︎ Jan 17 2022
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Asteroid-sample return shows water on its rocks’ surface. A cubic meter of asteroid dust may have as much as 20 liters of water. arstechnica.com/science/2…
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πŸ‘€︎ u/Sariel007
πŸ“…︎ Dec 03 2021
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Lake Baikal is a colossal body of water, containing about one-fifth of the fresh water on Earth's surface(23,000 cubic km)
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πŸ‘€︎ u/truendsa
πŸ“…︎ Oct 04 2021
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Lake Baikal is a colossal body of water, containing about one-fifth of the fresh water on Earth's surface(23,000 cubic km)
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πŸ‘€︎ u/truendsa
πŸ“…︎ Oct 04 2021
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Klein cubic surface with 27 lines v.redd.it/9qu08bce07z61
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πŸ‘€︎ u/sammy271828
πŸ“…︎ May 15 2021
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Surfaces and floors have been ruled out. Walls are probably my best option. Which of these would you choose? I have 202 tokens right now.
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πŸ‘€︎ u/bovine-princess
πŸ“…︎ Oct 21 2021
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Klein cubic surface containing 27 lines v.redd.it/xpxlcjw4e0z61
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πŸ‘€︎ u/sammy271828
πŸ“…︎ May 14 2021
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Pure Sodium metal has a body-centred cubic (bcc) structure, which you don't usually get to see. Surface tension usually keeps it in little balls. These were able to be peeled apart like an orange. reddit.com/gallery/n3ajno
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πŸ‘€︎ u/War_Horns
πŸ“…︎ May 02 2021
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Klein cubic surface containing 27 lines youtu.be/uRhqxwrytPc
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πŸ‘€︎ u/sammy271828
πŸ“…︎ May 17 2021
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27 lines on the Klein cubic surface youtube.com/watch?v=uRhqx…
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πŸ‘€︎ u/sammy271828
πŸ“…︎ May 15 2021
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Klein cubic surface v.redd.it/0rzu2tsq0ry61
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πŸ‘€︎ u/sammy271828
πŸ“…︎ May 12 2021
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"Weird Al" Yankovic references the number 27 constantly in his work: the number of lines on a cubic surface weirdal.fandom.com/wiki/2…
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πŸ‘€︎ u/frankie2
πŸ“…︎ Feb 26 2021
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Empty Hypercube Cubic Surface Area Formula?

My 6yo son has autism and is obsessed with watching number blocks videos on YouTube, memorizing their values, and asking me to make/print charts thereof before finally building them in Minecraft.

For the last month or two, he's loved "empty cubes." This video shows an example of "empty cube 9" whose cubic surface area construction requires 386 blocks based on the formula x = (n^3)-((n-2)^3) where n is the length of any side and x is the number of cubes requires to construct the total "empty cube" structure.

https://www.youtube.com/watch?v=pVd_Q6BLSns

He's now moved on to an obsession with hypercubes and has asked me to make a chart for him in Excel to print, but he has now officially exceeded my modest mathematical abilities. My assumption was that x = (n^4)-((n-2)^4) would be correct, which yields a pattern where the second and third values are 16 and 80. However, he is adamant it should be 16 followed by 74, but he cannot calculate any further. He is not verbal enough to explain to me where he's coming up with these figures.

Would anyone here be able to shed light on where I'm going wrong and perhaps provide a proper formula? He would be elated if I could make this happen for him somehow, and Google has not led me to the answer thus far.

Thanks in advance.

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πŸ‘€︎ u/monumentalbasser
πŸ“…︎ Dec 29 2020
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I wish that everyone died and that a Martian named Gloshytop ruled the ashes of the fallen world and united refugees of his people to create a vast civilization that eventually ends a civil war going on under the surface of Mars with their advanced army made from the remaining human technology.
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πŸ‘€︎ u/breigns2
πŸ“…︎ Sep 20 2021
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What is the rate of equilibrium transfer of carbon from air to ocean carbonate in micrograms of elemental carbon per cubic centimeter of ocean surface area per second at the rate we are producing CO2? /r/environment/comments/l…
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πŸ“…︎ Feb 23 2021
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TIL a beer tsunami devastated a neighborhood in London killing 8 and destroying whole houses. The 1500 cubic meter flood was ruled as an "Act of God" and nobody was held responsible en.wikipedia.org/wiki/Lon…
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πŸ‘€︎ u/tarandfeathers
πŸ“…︎ Oct 17 2017
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What is the rate of equilibrium transfer of carbon from air to ocean carbonate in micrograms of elemental carbon per cubic centimeter of ocean surface area per second at the rate we are producing CO2?
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πŸ“…︎ Feb 23 2021
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Find the surface area of a sphere whose volume is (4/3pi) cubic centimeters.

I know the SA of a sphere = 4pir^2, and the volume is basically the one that's given in the title, but how do I go from volume to SA??

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πŸ‘€︎ u/chandyego84
πŸ“…︎ Dec 17 2020
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If I go to the ocean, remove one cubic meter of sand from under the ocean surface, and place it inland, how much will I have affected the global ocean level if it evened out instantly?

Please. I've been losing sleep over this.

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πŸ‘€︎ u/YiffDealer69
πŸ“…︎ May 22 2020
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SOFIA found water molecules on the sunlit Moon surface in a cubic meter of soil; enough to fill a 12-ounce bottle nypost.com/2020/10/30/why…
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πŸ‘€︎ u/fcsuper
πŸ“…︎ Nov 01 2020
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Print defects - lines and warped surface of basically a printed disk - anyone had this and found a solution ? Settings = MM/S = 70, end temp 210c, bed temp 60c , infill 20% using cubic pattern, cura for the slicing . Thanks πŸ™ reddit.com/gallery/i5kzzv
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πŸ‘€︎ u/miles001abc
πŸ“…︎ Aug 07 2020
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Proving a hyperboloid of x^2+y^2-z^2=4 is a ruled surface

My book gave this question to me but I have no idea how to approach it. How would you prove something is a ruled surface in the first place?

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πŸ‘€︎ u/OfficialCword
πŸ“…︎ Apr 19 2021
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πŸ‘€︎ u/nobodyjh
πŸ“…︎ May 21 2021
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Graphene takes a step towards renewable fuel - Researchers are working to develop a method to convert water and carbon dioxide to renewal fuel, such as ethanol and methane, using the energy from the sun and graphene applied to the surface of cubic silicon carbide. liu.se/en/news-item/grafe…
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πŸ‘€︎ u/mvea
πŸ“…︎ Nov 07 2018
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Lake Baikal is the largest freshwater lake by volume in the world, containing 22–23% of the world's fresh surface water. Its 5,670 cubic miles of fresh water is more than the five Great Lakes combined. At a depth of 1642m, it is also the world's deepest lake, as well as oldest, at 25 million years. en.wikipedia.org/wiki/Lak…
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πŸ‘€︎ u/Vranak
πŸ“…︎ Sep 22 2017
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Bigelow Aerospace on Twitter: "Meet β€œFirst Base”. A lunar lander's best friend. This base can accommodate four people for a long duration or six people for 120 days on the surface of the moon. Habitat interior volume is 330 cubic meters, not including two airlocks" twitter.com/BigelowSpace/…
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πŸ‘€︎ u/ethan829
πŸ“…︎ Jun 03 2019
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TIL new research indicates the asteroid that killed the Dinosaurs did so, not primarily due to dust blocking out the sun, but by ejecting ~500 cubic miles of tiny glass spherules at near escape velocity. Upon falling to earth they incinerated nearly all surface life in a matter of minutes. en.wikipedia.org/wiki/Cre…
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πŸ‘€︎ u/crappyroads
πŸ“…︎ Feb 06 2014
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Donald Trump's fascist Circus Maximus: Pay attention to what's going on below the surface | As our nation slides toward becoming a decadent empire ruled by a madman, consider the destruction we can't see salon.com/2020/02/12/dona…
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πŸ‘€︎ u/tmac022480
πŸ“…︎ Feb 12 2020
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TIL that Gabriel's horn is a solid that has a finite volume but infinite surface area. This constitutes a mathematical paradox: Gabriel's horn can be filled up with a finite number of cubic units of paint, but you need an infinite number of units of paint cover its surface. fermatslibrary.com/s/gabr…
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πŸ‘€︎ u/mgdo
πŸ“…︎ Mar 09 2017
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[USA-NY] [H] Nintendo Switch Bundle, Optane Memory, Tai-Hao Cubic Keycaps, Corsair M65 Pro, Google Home Minis, Paypal [W] Paypal/Local Cash, Surface Pen

Hi guys, I'm selling the following items as well as looking for a platinum surface pen. Preferable newer condition with minimal wear on the tip.

-Nintendo Switch Bundle | Bought the switch late December and have only used it less than 10 times. It's in pristine condition, no scratch or dents. Smoke/pet free household. Two games included, Smash and Let's Go Eevee. Also comes with hard carrying case and new glass protector. Comes in original box with all the accessories.

-Intel Optane Memory | BNIB. 32GB

-Tai-Hao cubic ABS doubleshot keycap set | BNIB. I ordered two different sets and preferred the other one. Never took out of box and tried on. Here's a link for more details. It's the aquamarine one.

-Corsair M65 PRO RGB (White) | used but very good condition. All buttons are functional except the middle click. Scroll wheel works fine. Sometimes middle click works if you click hard enough.

-Google Home Minis | BNIB. I have x6 Chalk, x4x3 Charcoal, x3 Aqua, x1 Coral

Nintendo Switch Bundle Games Looking for $330 Shipped (US Only) or $320 Local SOLD

Intel 32GB Optane Memory Looking for $40 Shipped (US Only)/$35 Local

Tai-Hao Cubic Keycap Set Looking for $40 Shipped (US Only)/$35 LocalSold

Corsair M65 Pro RGB Looking for $25 Shipped/$20 Local

Google Home Minis Looking for $25 Each or 2 for $44 Shipped

Local is pretty much anywhere in Brooklyn (Varies depending on day of the week)

Can provide additional pics or information upon request.

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πŸ‘€︎ u/PuddleOfPee
πŸ“…︎ Apr 21 2019
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[Request] How Many Cubic Metres of Compressed Soil would be needed to absorb all of the liquid water on the surface of Earth? gfycat.com/LankyEarnestIb…
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πŸ‘€︎ u/TheGeorge
πŸ“…︎ Apr 15 2017
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Graphene takes a step towards renewable fuel - Researchers are working to develop a method to convert water and carbon dioxide to the renewable energy of the future, using the energy from the sun and graphene applied to the surface of cubic silicon carbide. liu.se/en/news-item/grafe…
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πŸ‘€︎ u/mvea
πŸ“…︎ Nov 07 2018
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There are 27 lines on every smooth cubic surface blogs.ams.org/visualinsig…
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πŸ‘€︎ u/octatoan
πŸ“…︎ Feb 17 2016
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D.C. Is Packing on Huge Amounts of Impervious Surfaces: The city has added β€œ1 million cubic meters of pavement, buildings, and the like every year for nearly three decades,” researchers say. citylab.com/weather/2016/…
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πŸ‘€︎ u/Austin98989
πŸ“…︎ Mar 30 2016
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[Request] how much surface area is in a cubic meter of sand.
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πŸ‘€︎ u/sanderflander
πŸ“…︎ Dec 05 2018
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