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At what temperature would the average speed of helium atoms equal (a) the escape speed from Earth, , and (b) the escape speed from the Moon, ? 

Note: The mass of a helium atom is .     

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Aerielle Anne Beltran
Aerielle Anne BeltranLv10
21 Nov 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

At what temperature would the rms speed of a carbon monoxidemolecule equal the following speeds? (Note: The mass of a carbonmonoxide molecule is 4.648 10-26 kg.)

(a) the escape speed from Earth, 1.12 104 m/s

(b) the escape speed from the Moon, 2.37 103 m/s

At what temperature would the RMS speed of helium atom equal the speed from Earth,  


14.1 a) The atmospheric pressure of Mars is about 600 Pa and thesurface temperature varies from -30 °C to -100 °C. The atmosphereof the planet is 95.3% carbon dioxide (CO2) and about 0.03% watervapor. The polar ice caps contain both CO2 ice and water ice. Couldthere be liquid CO2 on the surface of Mars? Could there be liquidwater? You need to provide quantitative justifications for youranswers. (What is
the key piece of data you need for your conclusion?) For more onwater on Mars, see
http://www.daviddarling.info/encyclopedia/M/Marsatmos.html
http://www.timesonline.co.uk/tol/news/science/space/article6849802.ece

b) What is the escape speed from the Earth? A gas moleculetravelling away from Earth near the outer boundary of the Earth’satmosphere would, at this speed, be able to escape from the Earth’sgravitational field. At what temperature is the rms speed of (i)oxygen molecules, and (ii) helium atoms equal to the escape speed?(iii) Can you see why our atmosphere contains oxygen but nothelium?

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