Keep the Heat B/Thermodynamics C

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foreverphysics
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Re: Keep the Heat B/Thermodynamics C

Post by foreverphysics »

Nope. If anything, this year's heat retention rate is actually higher than last year's.
That said, I'm also still in Division B, which only changed to 20x20x20.
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Re: Keep the Heat B/Thermodynamics C

Post by tagfam »

Does anyone know if glue can be used (i.e Elmer's glue) inside the box?
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Re: Keep the Heat B/Thermodynamics C

Post by 135scioly »

tagfam wrote:Does anyone know if glue can be used (i.e Elmer's glue) inside the box?
Yes, you can use it a "fastener", or even as an insulator since its not a foam or commerical insulation, though I don't know how effective that would be.
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Re: Keep the Heat B/Thermodynamics C

Post by Skink »

135scioly wrote:
tagfam wrote:Does anyone know if glue can be used (i.e Elmer's glue) inside the box?
Yes, you can use it a "fastener", or even as an insulator since its not a foam or commerical insulation, though I don't know how effective that would be.
I suspect it depends on what he's trying to glue together. I know one past box I've had used wood glue, but that was on wood (obviously).
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Re: Keep the Heat B/Thermodynamics C

Post by tagfam »

Thank you. Wanting to use it to attach wool to lid.
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Re: Keep the Heat B/Thermodynamics C

Post by 135scioly »

tagfam wrote:Thank you. Wanting to use it to attach wool to lid.
Yeah, we used hot glue for that because it dries way faster, but Elmers glue would work too.
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Re: Keep the Heat B/Thermodynamics C

Post by 135scioly »

siciscio wrote:Part of my device extends below the below, it's less than 2.5 cm ABOVE the lip of the beaker.
however if you account the portion below the beaker than it would be out of specs. What are you're thoughts? Should I send in a rule clarification for this? Thanks in advance :)
I think I have a question similar to this. I have cotton balls on my lid, and they go into the beaker, but not touching the water, if that makes sense. However the beaker is 2.5 cm below the lid...so basically is it ok that the cotton balls are inside the beaker? I know something like this has been asked before, I just want to know for sure. Thanks!
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Re: Keep the Heat B/Thermodynamics C

Post by siciscio »

Yup there was, :mrgreen: as long as your within the no more than 2.5 cm rule you should be ok :mrgreen:

Now do you mean it is 2.5 cm with the cotton inside or without the cotton?
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Re: Keep the Heat B/Thermodynamics C

Post by 135scioly »

siciscio wrote:Yup there was, :mrgreen: as long as your within the no more than 2.5 cm rule you should be ok :mrgreen:

Now do you mean it is 2.5 cm with the cotton inside or without the cotton?
Without the cotton, it is 2.5 cm...with the cotton it's Iike 0
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Re: Keep the Heat B/Thermodynamics C

Post by siciscio »

Is the lid flush with the lid? But it seems that it should be ok, I'd just be careful with it being 2.5 cm. ;)
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