# Search results

1. ### How to find distance of star using inverse square law

Homework Statement So i need to calculate the distance of some star the luminosity is 2 Lo and on earth its seen as .1 Lo Homework Equations I=L/4piR2 F=L/4piR2 The Attempt at a Solution I found two formulas, but not sure what to use. The F is flux density, and I am not sure how I...
2. ### How to show that the universe is static( not expanding)

nvm what i was thinking would not work
3. ### How to show that the universe is static( not expanding)

i know its expanding lol just think of this as different universe thats static. We have a project and one part of it is to create like a homework problem. it has to be on dark energy, so i figured my problem would be using that formula and showing the universe is static, like what Einstein thought
4. ### How to show that the universe is static( not expanding)

Homework Statement how can i show the universe is static and not expanding, how it really is. Homework Equations \OmegaM=... \Omega\Lambda=... The Attempt at a Solution "The expansion history of the universe depends on the amount of matter (gravity), quantified by \OmegaM...