Search found 43 matches
- March 18th, 2019, 9:45 pm
- Forum: 2019 Study Events
- Topic: Astronomy C
- Replies: 125
- Views: 47149
Re: Astronomy C
On the golden gate test, how would you do 17 c, d, and f? Explantion|17a use keplers third law- 9.965 solar mass 17b mass times distance = mass times distance- 5.97 solar mass 17c You know the distance of star b is 20 au. Convert to km, multiply by 2pi (it's a circular orbit). The period is 112 yea...
- March 18th, 2019, 8:14 pm
- Forum: 2019 Study Events
- Topic: Astronomy C
- Replies: 125
- Views: 47149
Re: Astronomy C
On the golden gate test, how would you do 17 c, d, and f?
- March 6th, 2019, 9:05 pm
- Forum: 2019 Question Marathons
- Topic: Astronomy C
- Replies: 55
- Views: 22639
Re: Astronomy C
Yup. I didn't specify whether it was a galaxy with a single cepheid or not but that's what I meant so props to you.
Your turn
Your turn
- February 24th, 2019, 9:48 am
- Forum: General Chat
- Topic: Scioly Achievement List
- Replies: 229
- Views: 63851
Re: Scioly Achievement List
Have you ever done any of the following? CLUTCH ACHIEVEMENT: Start studying for an event 24 hours before competition MEGA-CLUTCH ACHIEVEMENT: Start studying for an event the day of competition ULTRA-CLUTCH ACHIEVEMENT: Don't start working until the day of Nationals SPEEDBUILD ACHIEVEMENT: Your engi...
- February 20th, 2019, 7:51 am
- Forum: 2019 Study Events
- Topic: Dynamic Planet B/C
- Replies: 245
- Views: 65962
Re: Dynamic Planet B/C
Those as well as the diagrams of a glacier with fill in the blanks.
- February 19th, 2019, 6:42 pm
- Forum: 2019 Study Events
- Topic: Dynamic Planet B/C
- Replies: 245
- Views: 65962
Re: Dynamic Planet B/C
Are there any guides on how to read glacier maps and diagrams? I feel like I struggle in these questions and I need to learn how to manage them.
- February 7th, 2019, 7:11 pm
- Forum: 2019 Study Events
- Topic: Parasitology B/C [NY TRIAL]
- Replies: 2
- Views: 3483
- February 6th, 2019, 8:54 pm
- Forum: 2019 Lab Events
- Topic: Sounds of Music C
- Replies: 204
- Views: 61856
- February 6th, 2019, 8:32 pm
- Forum: 2019 Question Marathons
- Topic: Astronomy C
- Replies: 55
- Views: 22639
Re: Astronomy C
I just went with a random number that would be kinda smooth for plugging in. I just realized that its only a couple times brighter than the Sun.
- February 6th, 2019, 6:54 pm
- Forum: 2019 Question Marathons
- Topic: Astronomy C
- Replies: 55
- Views: 22639
Re: Astronomy C
Alright, so:
The luminosity of Galaxy A is 2.692x10^27 watts. Galaxy A has an apparent magnitude of 6.89.
Galaxy B contains Cepheid variable stars with a period of 0.04252 years. Galaxy B has an apparent magnitude of 4.37.
Calculate the ratio of the distance to Galaxy A to the distance to Galaxy B.
The luminosity of Galaxy A is 2.692x10^27 watts. Galaxy A has an apparent magnitude of 6.89.
Galaxy B contains Cepheid variable stars with a period of 0.04252 years. Galaxy B has an apparent magnitude of 4.37.
Calculate the ratio of the distance to Galaxy A to the distance to Galaxy B.