Explain, with reference to the Schwarzschild radius, why the sun isn’t a black hole.
The Schwarzschild radius of the sun can be calculated using Rs= (2GM)/c2. Substitute in the mass of the sun (M=21030), the speed of light (c=3108), and the universal gravitational constant (G=6.67410-11). a radius of 2966.35m will be calculated
Comparing this to the actual radius of the sun (7105km) it is seen that the real radius is much larder than the Schwarzschild radius. This means that the Schwarzschild zone ends within the sun! (I.e the sun would have to be <3000m in order to be a black hole.
LB
Related Physics GCSE answers
All answers ▸Can you explain the different ways heat can travel?
if -3 + -4 is -7, is -3 x -4 =-12 (also negative)
Ann and Bob play on a uniform seesaw. The seesaw is 4m long and Ann and Bob weigh 600N and 800N respectively. If both Ann and Bob start at one end of the seesaw and Bob starts to walk up the seesaw at 2m/s, after how long will the seesaw turn?
Can you explain the difference between distance and displacement