Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
A black hole with a mass of 50 solar masses ?
A black hole with a mass of 50 solar masses has a Schwarszchild Radius of ______ km. Assume 3 significant digits and do not use scientific notion
*do not use scientific notation*
4 Answers
- Anonymous2 years agoFavorite Answer
148 km. No scientific notation, 3 significant digits
- SpacemanLv 71 year ago
The Schwarzschild radius is the radius of the event horizon surrounding a non-rotating
black hole. Any object with a physical radius smaller than its Schwarzschild radius will
be a black hole. This quantity was first derived by Karl Schwarzschild in 1916:
Rs = 2GM/c²
G = universal gravitational constrant = 6.67E-11 N⋅m²/kg²
1 solar mass = 1.99E+30 kg
M = 50 solar masses = 50 x 1.99E+30 kg = 9.95E+31 kg
c = speed of light = 300,000 km/s = 300,000,000 m/s
Rs = Schwarszchild radius = to be determined
Rs = 2(6.67E-11 N⋅m²/kg²)(9.95E+31 kg)/(300,000,000 m/s)²
Rs = 147,502 m = 148 km
Source(s): https://www.britannica.com/science/Schwarzschild-r... http://astronomy.swin.edu.au/cosmos/S/Schwarzschil... http://astronomy.swin.edu.au/cosmos/G/Gravitationa... http://astronomy.swin.edu.au/cosmos/S/Speed+Of+Lig... - Anonymous2 years ago
They don't know, but one estimate I heard of the actual volume of a black hole compared to normal mass was 0.0001% but I don't even know what you mean. I'm very basic in my understanding of how it works. The mass is the same, the volume is a lot less because the electron and nucleus have no space between them.
