Black Hole

[Deathcrow]

I do astronomy, a black hole can be caused by a ton of stuff. Pretty much 90% of them occur from dwarf star's imploding. It's really a great topic to study, I don't go into the maths side of it much though.

Yep, dwarf stars are already super dense as is.

having fun showing off your physics skills?

Just showing everyone how much fun math can be and what you can use it to find out. =p

 

[fes]

I do astronomy, a black hole can be caused by a ton of stuff. Pretty much 90% of them occur from dwarf star's imploding. It's really a great topic to study, I don't go into the maths side of it much though.

Yep, dwarf stars are already super dense as is.

having fun showing off your physics skills?

Just showing everyone how much fun math can be and what you can use it to find out. =p

lol for what i do in life i only need basic math so its all good

 

[Strength_mybb_import21403]

1.78 is an approximate, because all your numbers are rounded down to significant digits. Basically you've applied a simple physics equation that can be found in a reference table, and chugged and plugged in some numbers.

 

[Deathcrow]

1.78 is an approximate, because all your numbers are rounded down to significant digits. Basically you've applied a simple physics equation that can be found in a reference table, and chugged and plugged in some numbers.

Yep, which is why I did say that the number I gave for the speed of light was approximate. Meant to say "about" on the diameter but forgot. Also, why are you trying to call me out or something? I can derive the equations for you. I just figured no one wanted to see that? I was simply trying to share a little bit of fun with math to figure out something kind of interesting.

EDIT:

To maybe satisfy your thirst for knowledge.

By the Conservation of Mass/Energy E1=E2
k1 + UG1 = K2 + UG2
1/2*m*v_esc^2 - G*M_E*m/R_E = 1/2*m*v_2^2 - G*M_E*m/r_2
Because the final velocity (v_2) isn't needed since it would be out of the gravitational pull of Earth that can = 0. Also, G*M_E*m/r_2 = 0 because of what I just said; gravitational pull would be = 0. And mass on the left side can also be crossed out as it doesn't matter.

So that gives us:
1/2*_esc^2 = G*M_E/R_E
v_esc^2 = 2*G*M_E/R_E
v_esc = (2*G*M_E/R_E)^(1/2)

That is how we derive the formula to find escape velocity.

If you want a picture of my notes plus the diagram I drew to go along with this, it wouldn't do you much good. I have horrible hand writing. lol

 

[sunshinerocs12]

I know who i'm going to for help with my math. Actually I already have several times =)

 

[Deathcrow]

I know who i'm going to for help with my math. Actually I already have several times =)

The calculator? XD

 

[G P]

You ought to watch vsauce's video on blackholes. Its amazing.

 

[Deathcrow]

You ought to watch vsauce's video on blackholes. Its amazing.

Very interesting. Thanks for sharing that with me!

Watching this now:
[video=youtube]http://www.youtube.com/watch?v=3pAnRKD4raY[/video]

 

[G P]

You ought to watch vsauce's video on blackholes. Its amazing.

Very interesting. Thanks for sharing that with me![/video]

No problem all his videos are interesting. You should also check out vsauce2 and their newly released channel vsauce3 which is about gaming.

 

[Deathcrow]

You ought to watch vsauce's video on blackholes. Its amazing.

Very interesting. Thanks for sharing that with me![/video]

No problem all his videos are interesting. You should also check out vsauce2 and their newly released channel vsauce3 which is about gaming.

I have actually watched one of his videos before, but didn't realize it until I recognized the guy. Think it was about colors. He showed a lemon and said that I wasn't seeing real yellow, that it was a fake yellow and that the computer is tricking my eyes. Was very interesting.