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by -274degreesC
April 19th, 2013, 6:51 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

We had our states as well. It wasn't too bad, but there was a station with ice water. I didn't think that this made sense because the ice water would warm up as it acclimated to the room. Thoughts?
by -274degreesC
March 21st, 2013, 1:44 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

I agree with Skink. If you use your body to estimate you will be tempted to use it in competition which, if seen by the proctor can result in a DQ.
by -274degreesC
March 19th, 2013, 6:54 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

Well, among common metals you have things like iron and aluminum, which have respective densities of 7.87 g/ml and 2.7 g/ml, so I think so far randomly guessing is our best strategy for this.
by -274degreesC
March 17th, 2013, 6:23 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

There were some reasonable ones (fishing weight, rock) but there was also one where there was a long metal rod made of an unknown material. Without knowing the metal, it was very hard to estimate.
by -274degreesC
March 17th, 2013, 2:59 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

At regionals this weekend, there were about 5 mass/weight questions on the test, and as it is said in the rules, you aren't allowed to lift anything without permission (which was not granted). Without the density or volume of the object, how are you supposed to estimate mass w/out touching the objec...
by -274degreesC
March 17th, 2013, 2:49 pm
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 56089

Re: Keep the Heat B/Thermodynamics C

I didn't really think I would need to know it either but there is a test from the Coolidge Invitational in the SciOly Test Exchange that talks about it so I just thought it would be useful to have a conceptual understanding of what it is. Thanks for explaining.
by -274degreesC
March 17th, 2013, 11:55 am
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

In the rules, it says that time is one of the units that could be in competition. So far, I have never seen a competition with this. Can someone give me an example of a time question that might pop up?
by -274degreesC
March 14th, 2013, 6:11 pm
Forum: 2013 Lab Events
Topic: Shock Value B/Circuit Lab C
Replies: 214
Views: 30818

Re: Shock Value B/Circuit Lab C

Why do we take the reciprocal of the sum of the reciprocals of parallel resistors? (What is the formula derived from?)
by -274degreesC
March 14th, 2013, 5:46 pm
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 56089

Re: Keep the Heat B/Thermodynamics C

What is the point of Gibbs free energy? There is a formula and everything but I am unclear as to what it is even used for. Also, can someone explain the concept of enthalpy? Again, I have the formula but not a working understanding of what it is.
by -274degreesC
March 14th, 2013, 1:28 pm
Forum: 2013 Lab Events
Topic: Metric Mastery B
Replies: 123
Views: 19905

Re: Metric Mastery B

You need to know sig figs

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