Thermodynamics B/C

[WhatScience?]

Oh sorry guys. I thought ice water would be a little above zero because I thought it did not actually have ice in it. Just ice that melted. My bad.

[WhatScience?]

So, back on the ice water point. Once we mix the ice water with the normal water. How long do we have before timing starts. Because that could have an impact on starting temperature and should be kept consistent. Sorry for sounding sort of out of it but I am pretty intrigued by this bonus and what to make sure I have the details right.

[chalker]

So, back on the ice water point. Once we mix the ice water with the normal water. How long do we have before timing starts. Because that could have an impact on starting temperature and should be kept consistent. Sorry for sounding sort of out of it but I am pretty intrigued by this bonus and what to make sure I have the details right.

Timing should start as soon as you receive the water, however each event supervisor is going to run this a bit differently so you can't count on it being that precise.

[WhatScience?]

Okay, so what temperature would the heat retention measurement begin at. The 60-90 C temperature, or the lower result that is the mix of the two waters?

[chalker]

Okay, so what temperature would the heat retention measurement begin at. The 60-90 C temperature, or the lower result that is the mix of the two waters?

I'm not sure what you are talking about. There isn't a 'starting' heat retention measurement. There is simply the ratio of the internal to external beaker temperature at the END of the cooling period.

[WhatScience?]

Okay, so what temperature would the heat retention measurement begin at. The 60-90 C temperature, or the lower result that is the mix of the two waters?

I'm not sure what you are talking about. There isn't a 'starting' heat retention measurement. There is simply the ratio of the internal to external beaker temperature at the END of the cooling period.

Oh, whelp! I do not think I understood that at all before. Thanks for clearing it up.

[daisyjo888]

Hello, I'm new to the forum and new to a lab event. Does anybody know if we have to build the 20cm x 20cm x 20cm cube or will there be a cube at the event from the sponsor/event leaders? Just wondering...

[JonB]

Hello, I'm new to the forum and new to a lab event. Does anybody know if we have to build the 20cm x 20cm x 20cm cube or will there be a cube at the event from the sponsor/event leaders? Just wondering...

You must build it before you come to compete.

[Unome]

Hello, I'm new to the forum and new to a lab event. Does anybody know if we have to build the 20cm x 20cm x 20cm cube or will there be a cube at the event from the sponsor/event leaders? Just wondering...

Are you referring to the device or the measuring cube? The measuring cube will be provided by the event supervisor (they could opt to just measure with a ruler or such; a cube may be faster though).

[chalker]

Hello, I'm new to the forum and new to a lab event. Does anybody know if we have to build the 20cm x 20cm x 20cm cube or will there be a cube at the event from the sponsor/event leaders? Just wondering...

To be clear, your device (which you build before the competition) just has to be able to fit into a 20cm cube. It can be smaller than that and doesn't have to be cube shaped.