insane_alien

well explain it further then.

what has that got to do with it?

look pressure is just the momentum transfer of atoms/molecules/stuff banging into each other. there are two ways to increase pressure, 1/ increase the frequency of collisions(more stuff) 2/ increase the energy of collisions(hotter) the inverse will result in lower pressures. the atoms stay the same size except under all but the most extreme of conditions where you get stuff like electron degeneracy pressures from forcing the electron orbitals out of position.

nothing needs to expand, the volume of the atoms changes as there are nuclear reactions although, you should really be talking about ions in the case of the sun. no, but then the pressure differential is far too small. if you could punch at a few thousand miles an hour, appart from being a superb boxer you would be able to hurt your hand on air. i am not sure what this has to do with it though. it manifests as mass but it is not matter that is being converted as the amount of matter will remain constant, it will just be in a lower energy configuration which means the energy has been released to the system. nope, no reason for this to be so, volume is not a conserved quantity. not a chance, if you did you would have a complete plenum which, is probably impossible and would definitely not be made of normal matter like the sun. yep. yes but it is miniscule and other effects dominate it. the sun is the oldest part of the solar system. and the galaxy is part of a larger system (called a cluster, can't remember the specific name) and thats part of the local supercluster(virgo super cluster?) and thats part of the universe. so ehh... whats the what if about?

okay then, the pressure will rise untill nuclear reactions cease then it will be steady state. this makes no sense, the walls are a surface. not a resistance. nope. the energy is already there, it just needs to be changed from potential energy in the nucleus to kinetic energy in molecules and light energy and this will raise the temperature without any additional input of energy or extraction of energy. nuclear reactions. particularly fusion. in the sun, you have 4 hydrogen atoms merging into the one helium-4 nucleus. (or 3 into a helium-3 nucleus) this changes the number. there are also other fusion reactions taking place.

the atoms in the sphere are not increasing in volume. and unless the sphere is a perfect thermal insulator then the pressure will actually drop. pressure is not created by resistance, pressure is created by collisions wit hthe walls of the container/object/whatever. you need to change either the temperature or the number of moles if the volume is fixed in the example given, both would change. even without energy transfer in or out of the sphere.

i suppose that could work. i'll run some calculations when i get home

and water is effectively an incompressible fluid* while air is compressible. *while water can actually be compressed, the ranges considered in hydroelectric power production allow this to be safely ignored as the effects are on the order of parts per billion.

basic algebra is a must. even if it is just the basic 'two tins of beans = £1.00 when a tin of beans costs £0.50' calculus, not so much unless involved in some field with a high dependance on mathematics such as engineering.

well, an RTG is a big nuclear battery. the nuclear batteries as used in pace makers are not so good for high wattage applications such as running a car.

emphasis mine. thats what i was reffering to.

exactly, a ball of molten rock would be an entirely melted earth.

err, yes it would. it would only need to go approximately half way in between mercury and the sun to become completely molten. closer and it will start vapourising.

chlorine requires energy input for it to fission. but yes, it would be theoretically possible to run a car off of a RTG or Reactor but it would have to be a very very big car.

err, you do know hydroelectric power requires that you drop the water from a great height don't you? we can't really do this with road transport, at least not without having to forgo bridges, tunnels and cornering as well as driving in even the slightest of breeze.

that doesn't answer his question at all.

i do know that, its the guys proclaiming HHO exists that do not.

the quantity of water will not change. it just gets slowed down a little.

i call one of my friends 'the higgs'(last name higgins, not very imaginative i know but still) i found her ages ago. money please.

agentchange, probably a bit too early to tell whether the bailout has worked. as is often the case in complex systems shoving more stuff in will temporarily decrease productivity for a while before a positive change is observed. particularly if you have no control over a large number of variables.

maybe looking at 300-400g/mol for fats. starches can be massive, like multi kilograms per mol

yes i suppose that would be better, my point was imperfect copying though

i'm guessing this is some sort of capacitor device. i mean, a gigawatt is a lot of it is a sustained thing, but if its a gigawatt for a microsecond then it isn't so big a deal. if you averaged it out, the power output could be substantially less than a kilowatt never mind a gigawatt.

i had a brain wave about this last night, does traveller think its the difference in mass because one object is exherting a force in one direction and the other object a force in the oposite direction and that these cancel out at least partially? if you do, then the froces cancel out exactly ALWAYS which means the system as a whole does not accelerate but both the objects will as they have unbalanced forces acting upon them untill they collide.

ohh you meant the attractive acceleration, well then thats actually quite large i was talking about r decreasing with time due to gravitational radiation. and whether you mentioned orbital periods or not, we did.