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Questions and Answers
What is a characteristic of a black hole?
What is a characteristic of a black hole?
- It is a region of spacetime where gravity is so strong that nothing can escape it. (correct)
- It is a region of spacetime where gravity is very weak.
- It is a region of spacetime where only light can escape.
- It is a region of spacetime where only matter can escape.
What is the minimum requirement for a mass to form a black hole according to Einstein's theory of general relativity?
What is the minimum requirement for a mass to form a black hole according to Einstein's theory of general relativity?
- A mass with infinite density.
- A mass with infinite volume.
- A mass with zero volume.
- A sufficiently compact mass. (correct)
What can escape from a black hole?
What can escape from a black hole?
- Everything, including light and matter.
- Only matter.
- Only light and other electromagnetic waves.
- Nothing, including light and other electromagnetic waves. (correct)
What is the relation between spacetime and a black hole?
What is the relation between spacetime and a black hole?
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What theory predicts the formation of a black hole?
What theory predicts the formation of a black hole?
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Study Notes
Black Holes
- A black hole is a region of spacetime with an extremely strong gravitational pull.
- The gravity is so strong that nothing, including light and other electromagnetic waves, can escape once it gets too close.
- According to Einstein's theory of general relativity, a compact mass can warp spacetime to create a black hole.
- The mass must be sufficiently compact to form a black hole.
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