Read the excerpt from neil degrasse tyson’s “death by black hole.” black holes are regions of space where the gravity is so high that the fabric of space and time has curved back on itself, taking the exit doors with it. another way to look at the dilemma: the speed required to escape a black hole is > the speed of light itself. . light travels at exactly 299,792,458 meters per second in a vacuum and is the fastest stuff in the universe. if light cannot escape, then neither can you, which is why, of course, we call these things black holes. which of the following features would best enhance the reader’s understanding of this excerpt?
a photograph of a black hole
a demonstration of the speed of light
an interactive animation of a black hole
a definition of the term black hole

This text is clearly a definition of the term black hole, made by the American astrophysicist Neil deGrasse Tyson.

However, the discussions about this subject are not new, since Einstein's theory of relativity already defined what a black hole is.

In this sense, a black hole is described as a "singularity" that consists of a region of the space in which the density of matter tends to infinity.

Although this is hard to find possible for classical physics; following what relativity establishes: bodies within a gravitational field follow a curved space path. Then the more a body enters the black hole, the more curved the space will become, until, in the center, it will become infinitely curved.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )