Homework Help!?

2021-01-12T01:20:13Z

I will not forget to mark as a favourite question for those who answered.

2021-01-12T15:17:37Z

A little more clear answer will be good. That means, explanation of the formula and etc. Anyone else wants to submit me an answer with an explanation? Thanks a lot.

Bryce2021-01-12T08:35:09Z

Favorite Answer

a. v²/d= GMs/d²; v²= GMs/d; Ms= v²*d/G
Ms= [2π*4.82*10^11/(422*24*3600)]² * 4.82*10^11 / 6.67*10^-11
= 4.99*10^31 kg  
b. Gbh/Gs= 1.99/30² / 4.99/(1.53*10^8)²≈ 1.04*10^13
The black hole has a surface gravitational force 10 trillion times greater than the star!

10

Anonymous2021-01-12T15:41:47Z

Do not use Kepler's law to solve. 

00

Trending Questions

I need help my math homework. How do you answer this question on page5?7 answersAn equilateral triangle has a side of length 4.68m. What it is perimeter ?5 answersAre we being punished by Yahoo Answers being cancelled?4 answersIf Lea goes grocery shopping every 4th day. How many times a week does she go grocery shopping ?5 answersHow do I stop procrastinating?6 answers