Posted by **singh** on Friday, May 4, 2007 at 2:51pm.

Calculate the escape velocity from a red giant's atmosphere (use the formula for escape velocity from chapter 2). Assume that the star's mass is 1 M and its radius is 100 R How does this compare with the speed at which a planetary nebula shell is ejected?

- astronomy -
**Anonymous**, Sunday, November 29, 2015 at 5:54pm
Hx

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