Search found 11 matches

by RAntonello
May 17th, 2013, 9:29 am
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 73088

Re: Keep the Heat B/Thermodynamics C

Could anyone explain the change in the temperature difference between two objects not in thermal equilibrium over time? For instance, if it took 10 minutes to reduce the temperature difference between two objects to 10 degrees Kelvin from 15 degrees Kelvin, how long would it take to reduce the diffe...
by RAntonello
May 2nd, 2013, 2:09 pm
Forum: 2013 Lab Events
Topic: Materials Science C
Replies: 68
Views: 21330

Re: Materials Science C

Could anyone explain how one might determine the packing structure of a particular material (i.e. FCC, BCC)? The question is asked several times in the Clio Invitational test that was posted a while back and there are no explanations given.
by RAntonello
March 22nd, 2013, 7:40 pm
Forum: 2013 Lab Events
Topic: Materials Science C
Replies: 68
Views: 21330

Re: Materials Science C

Not to be pushy, but it would be really great if you could get it up ASAP. States are tomorrow. :mrgreen:
by RAntonello
March 22nd, 2013, 11:02 am
Forum: 2013 Lab Events
Topic: Materials Science C
Replies: 68
Views: 21330

Re: Materials Science C

andrewwski wrote:I'm on vacation through the weekend. Not sure if the test is on my laptop (which is with me) or my external hard drive (which isn't). I'll take a look tomorrow.
Anything? It would be amazing if we could get some kind of test up shortly.
by RAntonello
February 28th, 2013, 2:48 pm
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 56090

Re: Robot Arm C

According to the rules, commercial batteries must not exceed 14.4 volts as labeled. Does that mean the max collective voltage allowed is only 14.4 volts, or each individual battery can be up to 14.4 volts as long as it is on different circuits. For example, a remote control needs a 9v battery but th...
by RAntonello
February 11th, 2013, 2:50 pm
Forum: 2013 Lab Events
Topic: Materials Science C
Replies: 68
Views: 21330

Re: Materials Science C

Supervised this event at a regional competition over the weekend - some advice and things to know based on the most common mistakes: -Young's Modulus is a function of stress and strain. Stress is force/area and force is mass*acceleration. Strain is the change in length/original length. Stress does ...
by RAntonello
December 13th, 2012, 1:09 pm
Forum: 2013 Lab Events
Topic: Materials Science C
Replies: 68
Views: 21330

Re: Materials Science C

So, I know that we're all in the dark with this event, so in all of our own vested interest in SO, and the spirit of fair competition. If ANYONE figures out what this event is about please post it here. Also, what's up with Miller indices and Bravais Lattices? Can anyone find a good tutorial for them?
by RAntonello
November 8th, 2012, 1:07 pm
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 73088

Re: Keep the Heat B/Thermodynamics C

Everyone has opinions and ideas about materials and I am rather opinionated until I find something better. With any non foam plastic allowed, there is not much use for ceramics or aluminum foil. They both absorb heat more than most plastics. If they absorb heat, they will transmit it. Vacuum is the...
by RAntonello
October 18th, 2012, 1:49 pm
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 73088

Re: Keep the Heat B/Thermodynamics C

Only if it is sold as such, I would think - however, I would not be at all surprised if most supervisors were to consider it a foam. Plus, it costs about $50 a cubic inch. What is the exact definition of "foam"?? Wikipedia defines a foam as "a substance that is formed by trapping poc...
by RAntonello
May 21st, 2012, 1:32 pm
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 106220

Re: Keep the Heat B/Thermodynamics C

I was wondering how other insulation devices did at nats. What were the best final temps and the most innovative ideas?

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