Brain Not Braining : Part 3 \ stacker news ~science

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310 sats \ 24 comments \ @noknees 16h science

Part 1: #1012448 Winner: @WeAreAllSatoshi Part 2: #1018252 Winner: @suraz, @rootmachine

Welcome back stackers to this week's challenge, comment first and win away the 1k sats

**Situation: ** You have 2 identical solid spherical bodies (A and B) placed in room temperature (~25 degrees celsius) in a dark room. Both have been freshly taken out from the freezer and have been left out in the room for cooling down. After about 1 hour you come back to the room and with a torch put light on both the bodies. You can see A, but you are unable to see B when you put light on it. You find that one body B weighs less A. On the contrary, A conducts electricity with almost 0 resistance and even conducts it when the electric current is taken away but B does not. Then you heat both the bodies to 1000 degrees celsius and find that B becomes burning red and brighter compared to A.

Here is a graph comparing A and B black - A, orange - B

**Question: ** What can be the 2 bodies?

This is an open ended question. Good luck!

1,000 sats paid

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2 replies \ @noknees OP 4h

Ok, since 12h have passed without any answers, I raise this bounty to 2000 sats Hint: What are the bodies expressing? I want what they are in general not what they are made up of

11 sats \ 1 reply \ @didiplaywell 3h

You mean in abstract terms like "B is an absorbing object" while "A is a reflecting object"?

0 sats \ 0 replies \ @noknees OP 3h

I mean like if an animal can fly, has feather and lays eggs - it is a bird is enough for me, you don't need to specify whether it is a sparrow or a blue jay i gave another hint here #1024379 they are not real bodies but are concepts

1 reply \ @noknees OP 2h

We got our winner again! @didiplaywell put in good effort ;p (#1024805 to #1024866) Answer: A is a superconductor and B is a black body.

stay tuned for next week stackers!

26 sats \ 0 replies \ @didiplaywell 2h

Thank you Sr :)

0 sats \ 10 replies \ @didiplaywell 6h

Without limiting the options to a specific material, generally speaking, object B could be an amorphous arrangement of molecules (hence its light absorption, low conductivity and less weight than A), and A could be a crystalline arrangement of molecules (hence its reflectiveness , superconductivity under low temperatures, and higher immutability than B under high temperatures).

0 sats \ 9 replies \ @noknees OP 4h

you are doing a case study of the compounds which is indeed true but I want what are the two bodies A and B (not the materials)

11 sats \ 8 replies \ @didiplaywell 3h

Sorry I'm lost there.. you already specified the geometry of the bodies (spherical), their consistency (solid), and want to know what the bodies are but their material is not the answer. What property is left? Or what you mean is what they could be as real life objects? That is, not "metal sphere" but "cannonball"?

0 sats \ 7 replies \ @noknees OP 3h

you can say, A is a conductor (not the answer) and B is a [something] in general terms.

511 sats \ 6 replies \ @didiplaywell 3h

Got it, then A is a superconductor and B is a superinsulator, thats for sure.

0 sats \ 5 replies \ @noknees OP 3h

1 correct answer and 1 wrong answer :)

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15 sats \ 1 reply \ @bitcoingecko 15h

Metal and graphite

0 sats \ 0 replies \ @noknees OP 8h

nope close but you can say it without specifying the material, moreover they are realistic bodies

0 sats \ 2 replies \ @rootmachine 14h

What can be the 2 bodies?

Solid spheres for sure. 🤣 This one is over my head. Can we use ChatGPT to figure it out?

0 sats \ 1 reply \ @noknees OP 8h

Solid spheres for sure.

lol

Can we use ChatGPT to figure it out?

i would recommend no

15 sats \ 0 replies \ @rootmachine 1h

Thank you for the answer. I now see it got solved. At concept level I was there, but thought that that's not the catch and that I had to literally identify the objects. Next time I'm typing all I think. Great bounty! I will be here for the next one. :)

0 sats \ 1 reply \ @suraz 16h

Pass 🤣

0 sats \ 0 replies \ @noknees OP 8h

lol

0 sats \ 0 replies \ @noknees OP 16h

On the contrary, A conducts electricity with almost 0 resistance and even conducts it when the electric current is taken away but B does not. at very low temp