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A black hole is a region in space where gravity is so strong that nothing, not even light, can escape from it.

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4mo ago

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Which has the lowest albedo a white sheet of paper a mirror the surface of a body of water or a black sheet of paper?

A black sheet of paper has the lowest albedo among the options given. Albedo refers to how much light a surface reflects, and black surfaces absorb more light, reflecting less back. The white sheet of paper would have a higher albedo due to its ability to reflect more light.


What metal is black does not rust and is magnetic?

The metal that fits this description is iron. When iron is exposed to air and moisture, it forms a black layer called magnetite, which protects it from further corrosion. Additionally, iron is a ferromagnetic material, meaning it can be magnetized.


What are the key features of the Boyer-Lindquist coordinates and how are they used in the study of black holes?

The Boyer-Lindquist coordinates are a set of coordinates used in general relativity to describe the spacetime around a rotating black hole. They are important because they allow for a more accurate description of the geometry near a black hole, taking into account its rotation. These coordinates are used in the study of black holes to calculate properties such as the event horizon, ergosphere, and the paths of particles and light near the black hole.


How does a black hole move through space?

A black hole moves through space by following the laws of gravity. Its movement is influenced by the gravitational pull of nearby objects, causing it to orbit or be pulled towards them. The black hole's mass and velocity also play a role in determining its movement through space.


What waves have the shortest wavelength and the highest frequency?

Gamma rays