Read the excerpt from neil degrasse tyson’s “death by black hole.” as far as i know, nobody has ever been eaten by a black hole, but there is compelling evidence to suggest that black holes in the universe routinely dine upon wayward stars and unsuspecting gas clouds. as a cloud approaches a black hole, it hardly ever falls straight in. unlike your choreographed feet-first fall, a gas cloud is typically drawn into orbit before it spirals to its destruction. the parts of the cloud that are closer to the black hole will orbit faster than the parts that are farther away. known as differential rotation, this simple shearing can have extraordinary astrophysical consequences. as the cloud layers spiral closer to the event horizon they heat up, from internal friction, to upwards of a million degrees— much hotter than any known star. the gas glows blue-hot as it becomes a copious source of ultraviolet and x-ray energy. what started as an isolated, invisible black hole (minding its own business) has now become an invisible black hole encircled by a gaseous speedway, ablaze with high-energy radiation. which of the following suggestions would be most beneficial for a reader in order to gain a better understanding of the information presented in this excerpt? (a)skim encyclopedias to learn star names and locations. (b)review scientific journals explaining the various types of clouds. (c)read a variety of sources about the formation of black holes. (d)search web pages focused on personal encounters with black holes.
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English, 21.06.2019 15:00
Hich excerpt from "the cask of amontillado" best infers what will be fortunato's downfall? the gait of my friend was unsteady, and the bells upon his cap jingled as he strode he had a weak point --this fortunato --although in other regards he was a man to be respected and even feared. he prided himself on his connoisseurship in wine. "nitre," i replied. "how long have you had that cough? " "my friend, no; i will not impose upon your good nature. i perceive you have an engagement. luchresi--"
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English, 21.06.2019 17:30
Jackson is a very smart little boy he can count to twenty and is only two years old. complete, run on sentence or comma splice
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Read the excerpt from neil degrasse tyson’s “death by black hole.” as far as i know, nobody has ever...
Mathematics, 18.03.2021 03:20
Mathematics, 18.03.2021 03:20
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Mathematics, 18.03.2021 03:20