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astronomy homework

5. In a scenario where pressure and gravity are perfectly balanced within a molecular
cloud, describe what would happen to the cloud in the following cases. (15 pts)
a. The temperature suddenly dropped
b. The temperature suddenly rose
c. The cloud gained a little bit of mass

6. Find a picture related to the birth of a star on the web. State your source and
briefly describe what you see and the wavelengths of light used to take the
picture. (12 pts)

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Answers (1)

MFB13

5a. The cloud would condense to form either a liquid or solid in a dispersed form with precipitation occuring.
5b. The coloid that makes up the cloud would disperse further, dissolve within the gas such that the apparence of the cloud would dissapear. Also, the molecules would be moving faster and the pressure would rise (Charles's Law).
5c. By gaining more mass, this implies that more molecules would be added to the cloud which can cause precipitation to occur. The gaseous coloid which being the cloud is a liquid thats suspended within a gas and any addition of molecules or mass would act as a seed which disrupts the suspension equilibria with the gas where condensation will occur leading to precipitation.

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