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by ET2020
June 3rd, 2019, 7:13 am
Forum: Mission Possible C
Topic: Scores Discussion
Replies: 31
Views: 5270

Re: Scores Discussion

Anyone know what the top scores at nats were?
by ET2020
March 16th, 2019, 5:32 pm
Forum: 2019 Regionals & States
Topic: New York 2019
Replies: 299
Views: 38974

Re: New York 2019

Congratulations to Ward Melville and Columbia! It was a great competition and I’m glad that all of the events ran smoothly. Also, I just want to point out that Columbia set a new record as the only team to ever score under 100 at New York States. They absolutely look like a top 5 national team.
by ET2020
March 16th, 2019, 4:28 pm
Forum: Mission Possible C
Topic: Scores Discussion
Replies: 31
Views: 5270

Re: Scores Discussion

1348 won New York State with an 85 second target. We had 9 tasks but no touches.
by ET2020
March 9th, 2019, 12:35 pm
Forum: 2019 Question Marathons
Topic: Astronomy C
Replies: 55
Views: 5729

Re: Astronomy C

Two stars orbit in a binary system. Star A's orbit traces a circle with an apparent radius of 600 milliarcseconds, while star B's orbital traces a circle with an apparent radius of 200 milliarcsecond. Star A is a main sequence star with a luminosity of 4.2 solar luminosities and an apparent magnitud...
by ET2020
February 26th, 2019, 8:39 pm
Forum: 2019 Question Marathons
Topic: Astronomy C
Replies: 55
Views: 5729

Re: Astronomy C

Attempt:|Galaxy A: 2.692*10^27 W = 7.03 solar luminosities M = 4.83-2.5log(L) = 2.71 d = 10^([m-M+5]/5) = [b]68.48 pc[/b] (this is an impossibly close galaxy, but you can still do the math with it) Galaxy B: P (days) = 365.25*0.04252 = 15.53 days M = -2.81logP - 1.43 = -4.78 Now this is the tricky ...
by ET2020
February 26th, 2019, 11:59 am
Forum: 2019 Study Events
Topic: Astronomy C
Replies: 125
Views: 18534

Re: Astronomy C

I've noticed that there seem to be two different equations used to calculate recessional velocity from redshift. The more commonly used one, v = Z*c, works fine for relatively close objects, but creates a problem for objects with redshifts > 1. The equation is problematic because it implies that we ...
by ET2020
February 20th, 2019, 3:36 pm
Forum: 2019 Regionals & States
Topic: New York 2019
Replies: 299
Views: 38974

Re: New York 2019

Where can the results to this poll be found? I'd like to see what people are saying.
by ET2020
February 20th, 2019, 3:21 pm
Forum: 2019 Nationals
Topic: Way Too Early Predictions
Replies: 402
Views: 44895

Re: Way Too Early Predictions

Div C: 1. Troy 2. Acton-Boxborough 3. Mason 4. Solon 5. WWPN (or WWPS) 6. Mounds View 7. 7L/Clements 8. Boca Raton 9. Columbia 10. Harriton 11. Mira Loma 12. New Trier This is looking like one of the most competitive groups of teams in years. I listed 12 because all of them seem like easy top 10 pla...
by ET2020
February 20th, 2019, 10:08 am
Forum: Mission Possible C
Topic: Mission Possible C
Replies: 170
Views: 25817

Re: Mission Possible C

Does anyone know what the top scores were for Mission at Cornell?
by ET2020
February 19th, 2019, 5:23 pm
Forum: 2019 Invitationals
Topic: Cornell Invitational (Division B and C)
Replies: 199
Views: 26852

Re: Cornell Invitational (Division B and C)

Does anyone have the answer to question 25b on the astro test? The key hasn't been published and I think I corrected the mistake I made but have no way to check my new answer.

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