subject
English, 08.03.2021 23:10 eweqwee4163

Read this excerpt from "Why Are They Called Black Holes?" After many millions or billions of years, the star runs out of hydrogen and energy. Then the star "dies" and collapses into a dense little ball with tons of gravity. Albert Einstein’s theory of relativity predicted that black holes would have to exist if a dead star had enough gravity. Using Einstein's theory, astronomers calculated that if a star more than three times as heavy as our sun died, the force of gravity pulling matter in could overwhelm any other force pushing matter out.

ON A EXAM PLEASE HURRY

In this excerpt, the author makes a connection between a scientific theory and

the calculations that scientists make.
the beginning of a star's existence.
the idea that all things live and die.
the question of why gravity exists.

ansver
Answers: 1

Another question on English

question
English, 21.06.2019 21:30
Nthis excerpt from act v of shakespeare's romeo and juliet, friar laurence's letter to romeo is not delivered due to circumstances beyond his control. what is the conflict in the scene?
Answers: 1
question
English, 22.06.2019 00:30
My best friend is a white girl named denise — we look at boys together. she sat in front of me all through grade school because of our names: o'connor, ozawa. i know the back of denise's head very well. why does the speaker share details about race, friendship, and names in this stanza? check all the correct answers. to indicate that the students were already segregated and isolated to emphasize the idea that all americans were treated as equals prior to the attack to reveal the extent of the impact resulting from the attack on pearl harbor to identify the compassionate response following the attack on pearl harbor
Answers: 1
question
English, 22.06.2019 03:30
Where did moon shadow’s father get the name windrider?
Answers: 1
question
English, 22.06.2019 04:00
Analyze identify gandhi central claim in his letter. what key reasons does he provide to support his claim
Answers: 1
You know the right answer?
Read this excerpt from "Why Are They Called Black Holes?" After many millions or billions of years,...
Questions
question
Mathematics, 14.05.2021 02:50
question
Mathematics, 14.05.2021 02:50
question
Mathematics, 14.05.2021 02:50
question
Mathematics, 14.05.2021 02:50
Questions on the website: 13722367