Recent content by jqnsmart

I'm sorry, but when you said smaller, I instantly thought of linear size, not mass, which is why I felt a need to correct you. Titan has quite a few things going for it in terms of an atmosphere. It might not be as massive as Mercury, but cold molecules take much less force to retain than...

That is not true, Titan is actually slightly bigger than Mercury. Mercury's radius: 2,439.7 ± 1.0 km Titan's radius:2,576±2 km (My numbers from Wikipedia) http://en.wikipedia.org/wiki/Mercury_(planet ) http://en.wikipedia.org/wiki/Titan_(moon ) And yes, Titan is able to retain its...

Not to mention that the solar wind is more able to knock out smaller molecules from an atmosphere than bigger ones.

As I understand it, Venus is able to retain such a massive atmosphere almost entirely because of its mass. In fact, if you think about it, you can see a relationship between the size of the atmosphere of the inner planets, and their sizes. Earth and Venus, being the biggest inner planets, retain...

First of all, welcome to PF! It is always nice to see new members log on! Second, I would like to inform you that this is not where we make questions concerning homework, that has a special section you can access from the PF home page called Homework and Coursework Questions. Third I...

You seem to be setting up the problem correctly, but the calculation is off. Try instead to find the answer with acceleration isolated (a=F/m). That might make calculating things simpler.

I see...your problem in the equation for molality. Molality is equal to moles of solute over one kilogram of solvent. I think you flipped your equation

Sorry it has taken me so long to respond, but I had a problem with my internet company that lasted quite some time. I do, however, feel an obligation to respond. Even thought the polar ice caps are nearby, any carbon dioxide exposed would sublimate almost instantly, especially since it was...

Maybe there are white holes. Maybe we just haven't seen them. Just like we haven't explored the oceans completely, which are right here, we haven't (and probably can't expect to in many lifetimes) explored the universe. I've seen this idea in books before, so more than one person must find...

Talk about a very pessimistic view of the universe. I think that we will have an answer on the universe and what created it. Just knowing that people out there devote their entire careers to finding out how it happened is already very convincing that we will get an answer (at least to me)...

I think we can definitely rule out carbon dioxide. Mars' atmosphere has a pressure of 0.007 times that of Earth, or 0.007 atm or 700 Pa. At this pressure, carbon dioxide could be solid only at extremely low temperature, close to absolute zero. Even if it could survive underground as ice, it...