The Schwarzschild radius RBH for an object of mass M is defined as RBH = 2GM c² where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. RBH = The mass of the Sun is about 1.99 × 10³0 kg. What would be the radius of a black hole with this mass? m

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The Schwarzschild radius RBH for an object of mass is defined as

(See image.)

where is the speed of light and is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole.

 
1. The mass of the Sun is about 1.99 × 1030 kg. What would be the radius of a black hole with this mass?
 
2. The mass of Mars is about 6.42 × 1023 kg. What would be the radius of a black hole with this mass?
 
3. Suppose you want to make a black hole that is roughly the size of an atom (take RBH = 1.10 x 10-10 m). What would be the mass M of such a black hole?
The mass of Mars is about 6.42 × 10²3 kg. What would be the radius of a black hole with this mass?
RBH
=
Suppose you want to make a black hole that is roughly the size of an atom (take RBH 1.10 × 10-¹0 m). What would be the
mass M of such a black hole?
M =
m
kg
Transcribed Image Text:The mass of Mars is about 6.42 × 10²3 kg. What would be the radius of a black hole with this mass? RBH = Suppose you want to make a black hole that is roughly the size of an atom (take RBH 1.10 × 10-¹0 m). What would be the mass M of such a black hole? M = m kg
The Schwarzschild radius RBH for an object of mass M is defined as
RBH
RBH
-
where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black
hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order
to form a black hole.
2GM
c²
The mass of the Sun is about 1.99 × 10³0 kg. What would be the radius of a black hole with this mass?
=
m
Transcribed Image Text:The Schwarzschild radius RBH for an object of mass M is defined as RBH RBH - where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. 2GM c² The mass of the Sun is about 1.99 × 10³0 kg. What would be the radius of a black hole with this mass? = m
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