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by jennyk
April 16th, 2015, 7:00 am
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

Don't know if this question has come up yet, but we were wondering if the clock stops on the 8 min allowed for the 4 attempts while the judges are measuring the distance. Sometimes they can take quite a while. And if the clock does stop, are you allowed to be setting up the next attempt, or is that ...
by jennyk
February 22nd, 2015, 5:13 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

Alright already with the golf balls. Check out the links below for what can be used vs. what can't. These are legal b/c they are plastic and have the word "plastic" on the packaging: http://www.amazon.com/PrideSports-Practice-Balls-Hollow-Count/dp/B005JTDDAQ/ref=pd_sim_t_3?ie=UTF8&refRID=1AH25HM0YZ4...
by jennyk
February 21st, 2015, 6:20 am
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

Unfortunately, there is no such thing as an HDPE foam practice golf ball. HDPE is high density polyethylene, which is a completely different polymer than the polyurethane foam that is used to make practice golf balls. Well, the FAQ stating "HDPE foam" was very confusing for those of us w/o chemistr...
by jennyk
February 20th, 2015, 4:23 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

I thought that the FAQ clarification "The most common type of plastic golf balls are plastic dimpled and plastic with holes and HDPE foam types are legal" meant that HDPE (foam) was a type of plastic. At regionals, the event judge questioned the HDPE golf balls, so the chief official in charge had t...
by jennyk
February 2nd, 2015, 2:12 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

I thought I had submitted a FAQ about the masses. If it wasn't received, I'm not sure if I did it right. I'll try submitting about the triggering device to get an official clarification although it seems pretty clear by the official rules that a detachable trigger doesn't have to fit in the box with...
by jennyk
February 1st, 2015, 8:44 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

Another question, this time pertaining to the triggering device. The team was almost tiered at regionals b/c the judge thought that the triggering device, a detachable long pole that hooked onto a switch on the device, had to fit inside the 80cm x 1.0m x 1.0m box (per section 3, paragraph d.) The te...
by jennyk
January 30th, 2015, 4:29 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 103413

Re: Air Trajectory B/C

I have a question about the weights. We're confused about the part that states "The launching force must be entirely supplied by the gravitational potential energy from a falling mass less than or equal to 3.500 kg (Div C); 5.000 kg (Div B). Any device part whose potential energy decreases and provi...
by jennyk
April 2nd, 2014, 7:19 pm
Forum: 2014 Build Events
Topic: Sounds of Music B
Replies: 142
Views: 19505

Re: Sounds of Music B

See the tuning setup for the guitar at http://www.instructables.com/id/Build-a ... ic-Guitar/.
by jennyk
January 16th, 2014, 10:26 pm
Forum: 2014 Build Events
Topic: Sounds of Music B
Replies: 142
Views: 19505

Re: Sounds of Music B

Couple of questions from the team. Is it ok to use a guitar foot stool to prop up your left foot when playing a cookie tin guitar if you are used to playing classical style guitar or does this violate the no professional parts except for strings rule. The stool is just to help with comfortable posit...
by jennyk
December 21st, 2013, 1:08 pm
Forum: 2014 Lab Events
Topic: Shock Value B/Circuit Lab C
Replies: 70
Views: 19272

Re: Shock Value B/Circuit Lab C

Does the team do the written test portion together, or do each member of the 2 person team do the same test questions separately, and if so, how is that scored?

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