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Mathematics 16 Online
OpenStudy (anonymous):

When a low-mass star runs out of fuel, it ejects a cloud of dust and gas called a _________. A. planetary nebula B. white dwarf C. neutron star

OpenStudy (anonymous):

D) space fart

OpenStudy (anonymous):

learn something new everyday...haha

OpenStudy (anonymous):

A

OpenStudy (anonymous):

Hi. I'm mature. What's goin' on?

OpenStudy (anonymous):

Hi mature. I'm Ivy. I'm doing hw ;D lol

OpenStudy (anonymous):

It's D.) Space Fart That guy sounds like my answers to your questions last night :D

OpenStudy (anonymous):

This nebula is confusing

OpenStudy (anonymous):

I know righ chris xD

OpenStudy (anonymous):

At the end of the star's life, during the red giant phase, the outer layers of the star are expelled via pulsations and strong stellar winds. Without these opaque layers, the hot, luminous core emits ultraviolet radiation that ionizes[2] the ejected outer layers of the star. This energized shell radiates as a planetary nebula.

OpenStudy (anonymous):

Now it says Red-Giants and they are really huge

OpenStudy (anonymous):

white dwarf you need a very strong and huge star for massive gravity collapse i'm with white dwarf

OpenStudy (anonymous):

hmmmm so i got A and B >.<

OpenStudy (anonymous):

yeah A and B

OpenStudy (anonymous):

no, it is just A., Read the question properly

OpenStudy (anonymous):

Intermediate to low mass stars run out of hydrogen in their cores after tens of millions to billions of years in the main sequence. Gravity compresses the core and it heats up. Currently the sun's core has a temperature of approximately 15 million K, but when it runs out of hydrogen, the compression of the core will cause the temperature to rise to about 100 million K.[17] The outer layers of the star expand enormously and become much cooler in response to the very high temperature of the core. The star becomes a red giant. The core continues to contract and heat up, and when its temperature reaches 100 million K, helium nuclei begin to fuse into carbon and oxygen. The resumption of fusion reactions stops the core's contraction. Helium burning (fusion of helium nuclei) soon forms an inert core of carbon and oxygen, with both a helium-burning shell and a hydrogen-burning shell surrounding it. In this last stage the star will observationally be a red giant again and structurally an asymptotic giant branch star.[17]

OpenStudy (anonymous):

Combined with Ishaan's info, that conclusively gives us A. Yes, red giants are huge, but they are low in mass.

OpenStudy (anonymous):

Ahhh okees dokees :) xDD

OpenStudy (asadkarim7):

Nebula

OpenStudy (asadkarim7):

its A

OpenStudy (anonymous):

I'm really excited that I finally made superstar by earning medals on a star related question.

OpenStudy (asadkarim7):

Lmao @ Smooth math's 1st answer Space fart :P hahahaha Rofl

OpenStudy (anonymous):

I'm pretty clever.

OpenStudy (anonymous):

HAHAHA mhm... yea...clever...xD hahaha

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