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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...

On the golden gate test, how would you do 17 c, d, and f?

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

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...

Those as well as the diagrams of a glacier with fill in the blanks.

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.

You can find some rules here:
http://www.newyorkscioly.org/wp-content ... e_List.pdf
http://www.newyorkscioly.org/wp-content ... y-2018.pdf

..

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.

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.