So it is no surprise that we don't see asteroids affected by "RE or SW" but we should expect to see them pushed out to the asteroid belt and beyond (Brown says one of Saturn's moons is a captured asteroid) by the radiometer effect and solar wind. Which is it?>>
I guess you DON'T accept the RE...why did you say you DID? Which is it, Pi? Brown DOES say the stuff that eventually gets consolidated DOES get pushed to the A-belt. I thought you knew that. Why do you have to ask "which is it?"
>>The "cloud of stuff" (which I guess is mostly made of water molecules) will quickly be blown away from the more dense and more massive rocks. >>
Nope. If it were a very strong "wind" which could exceed the force of the gravity, it would. But this is a GENTLE wind. Picture balloons held together by very thin string. They will stay together unless the wind gets very strong. For the gases and asteroid seed rock, their mutual gravity is what keeps the cloud intact. As the cloud reduces in volume, due to gravity compacting it, eventually the force cannot move it further outward and it settles in the a-belt. Bigger clouds could go out beyond Neptune to make the TNO's.
>>With a density many times that of the "cloud," the pressure of any wind type forces would act much more on the less dense object. Pressure = force * area while force = mass * acceleration.... the same pressure on a more dense object will be acting on less area therefore therefore it will exert less force. Less force on a more massive object will result in less acceleration. You really don't even need to do the calculations .... it's almost intuitive.>>
It might be to you...but I remember that the objects (dense and less-dense ones) are indeed "tied together". Your intuitive argument assumes there is NOTHING tying them together at all. Is gravity a force (small as it may be) that could hold them all together if the force is very slight? Yes or no please.
>>I'd like to see the details that support your claim the "cloud of gases" will pull along 200 meter rocks. With a density many times that of the "cloud," the pressure of any wind type forces would act much more on the less dense object. Pressure = force * area while force = mass * acceleration.... the same pressure on a more dense object will be acting on less area therefore therefore it will exert less force.>>
I guess we need to figure how much force pushing outward there would be...and how much force pulling the stuff together there would be. We would need to make assumptions about the size and mass. Are you saying that NO MATTER HOW SLIGHT the pressure was, and no matter how strong the gravity holding them together was...the gases would always get stripped from the denser stuff? That is an absurd claim...but that seems to be what you are saying.
In distant space, where Earth's gravity has no effect, then the "only gravity game in town" is the rock and the gases. A bunch of water gas that is (say) .01-density (one tenth the protocomets we've been discussing) could have more mass than that 200m 2-density rock might have. Let's say the cloud is 2000m diameter, made of water (1-density). The cloud has 1000x the volume of the rock. That means it has 5x the weight. So if they are not outside the gravitational influence of each other, then a slight force would not move them apart. If you push lightly on one balloon tied by thin string to other balloons they all will move together.