Search found 7 matches

by AllenWang314
May 14th, 2018, 4:50 pm
Forum: 2018 Lab Events
Topic: Chemistry Lab C
Replies: 50
Views: 15660

Re: Chemistry Lab C

Last minute thing that is bothering my mind: If a write-in question at nationals is worth 5 points how many points does one lose for

1. being off by a little bit (5.07 vs 5.05)?
2. messing up sig figs (5.07 vs 5.1)?
by AllenWang314
April 21st, 2017, 6:56 am
Forum: 2017 Lab Events
Topic: Materials Science C
Replies: 61
Views: 31031

Re: Materials Science C

What does it mean when we say, "kevlar is stronger than spider's silk"? Does it refer to ultimate tensile strength, yield strength, or young's modulus, etc.?
by AllenWang314
April 20th, 2017, 6:17 pm
Forum: 2017 Lab Events
Topic: Forensics C
Replies: 94
Views: 17170

Re: Forensics C

For the Rfs of different molecules on nationals tests, the answer key usually just says things like 0.97, 0.55, 0.34, 0.24. Do they allow for a range of answers, so if I say 0.95, 0.59, 0.32, 0.22, will they accept that as valid, or will they only accept exactly what they have, can somebody with exp...
by AllenWang314
March 30th, 2017, 12:43 pm
Forum: 2017 Lab Events
Topic: Forensics C
Replies: 94
Views: 17170

Re: Forensics C

Regarding national tests, what is fluorescence? What area (chromat, fibers, blood, or chem) of the event is it about? And what do we have to know about it, and what are websites that can give enough info?
by AllenWang314
February 22nd, 2017, 5:46 pm
Forum: 2017 Lab Events
Topic: Forensics C
Replies: 94
Views: 17170

Re: Forensics C

Okay, for hairs are you allowed a microscope at the competitions?

At MIT, we had to identify by feel, touch, and taste if you yolo-ed---no microscopes were provided.
by AllenWang314
December 27th, 2016, 2:01 pm
Forum: 2017 Lab Events
Topic: Materials Science C
Replies: 61
Views: 31031

Re: Materials Science C

On the event description it says: "For States and National tournaments: Resistance to fracture (Fracture toughness), Resistance to repetitive strain ..." etc. But it didn't say for "States and Nationals ONLY" (which it did for chemistry lab). So can these topics show up on invitationals tests?
by AllenWang314
January 17th, 2016, 5:47 pm
Forum: Air Trajectory B/C
Topic: Lasers
Replies: 15
Views: 3850

Lasers

What lasers are allowed in the competition? My team was deciding to use a laser to create an aiming mechanism,

would this laser be too powerful:

http://www.amazon.com/gp/product/B00A6M ... ge_o04_s00

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