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by 5uper5tring
May 23rd, 2018, 8:39 pm
Forum: 2018 Nationals
Topic: Nationals Event Discussion
Replies: 83
Views: 13145

Re: Nationals Event Discussion

The covers were not attached to the mirrors so they had to be placed independently (not really any other option). I was one of the LS supervisors and Adi1008 did not compete at my LS box so therefore that other supervisor was also following the same procedure as I was (there were only 2 boxes). You...
by 5uper5tring
May 23rd, 2018, 7:58 pm
Forum: 2018 Nationals
Topic: Nationals Event Discussion
Replies: 83
Views: 13145

Re: Nationals Event Discussion

" One thing I especially liked was how they handled the covers for the mirrors: you were allowed to place the mirror on the LSS without the cover as long as you put the cover on immediately after. A lot of the time, the covers can interfere with being able to place the mirrors accurately, so this a...
by 5uper5tring
May 23rd, 2018, 6:20 pm
Forum: 2018 Nationals
Topic: Nationals Event Discussion
Replies: 83
Views: 13145

Re: Nationals Event Discussion

What an amazing tournament; thank you to all the event supervisors, directors, volunteers, and countless others who put so much effort into putting together this National tournament. I was lucky to have all my events be very well run. Undoubtedly an unforgettable experience not only for me, but for...
by 5uper5tring
May 22nd, 2018, 8:53 pm
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

When does the timer usually start? Is it as soon as the water is poured into the beaker? Or after the beaker+water has been placed into the device? Or after you have determined the initial water temperature with your own thermometer after beaker+water has been placed into the device? Is it up to ind...
by 5uper5tring
April 29th, 2018, 7:35 am
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

Wow, can't believe I missed this haha. I was actually the one who wrote this question. Here's how I intended for the problem to be solved: Answer|You don't actually have to solve for internal energy or anything crazy like that. You can use the following adiabatic relationship to solve for everythin...
by 5uper5tring
April 28th, 2018, 8:38 pm
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

HI guys! I just got the BDJH regional test, and looking at the one for C division I just can't figure out how to solve this. 1.)You have a piston filled with 8 moles of a monatomic ideal gas at a temperature of 278 K. It is completely insulated (meaning that there is no heat transfer between the wa...
by 5uper5tring
April 28th, 2018, 5:52 pm
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

I don’t remember the initial temperature exactly, but it was about 75-85. We added a full 50ml. The winning team did not add ice water, but they won because of the test, not their device. (I spoke to them after and did the math to confirm this) Was the 39.88 the highest experimental score (predicti...
by 5uper5tring
April 28th, 2018, 12:00 pm
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

Quick update on the ice/no ice debate: between my prediction, my heat retention, and my ice bonus I received 39.88 points for my device at the state tournament (and that's even after the low volume [80ml] and low time [22 min] made it so that the benefit of the ice bonus was even smaller). Without ...
by 5uper5tring
April 28th, 2018, 9:57 am
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

Quick update on the ice/no ice debate: between my prediction, my heat retention, and my ice bonus I received 39.88 points for my device at the state tournament (and that's even after the low volume [80ml] and low time [22 min] made it so that the benefit of the ice bonus was even smaller). Without ...
by 5uper5tring
March 11th, 2018, 8:53 am
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 86282

Re: Thermodynamics B/C

Does the testing time start from the moment you receive water or from the moment the beaker is placed in the device?
Can you use your own thermometer to measure the initial water temperature (after it is poured into device) before making the prediction?
Thanks!

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