Through converting its pressure potential energy into molecular kinetic energy; thus, no 'force' is applied to the gas & no work is done, as the gas is expanding freely into a vacuum without meeting resistance.
Pressure potential Energy in bernoulli's equation is the term relative to static pressure... Static means no movement. How are u supposed to convert something that is static into kinetical Energy, which implies speed, without accelerating a mass of fluid?
But in general How do u suppose to convert Energy without forces and wok be exchanged?
U can convert easily gravitational potential energy into kinetical energy but that occurs thanks to the force of gravity
To create potential energy to be of use kinetically, you first have to expend the energy to do so, for it to actually be potential energy in the first place.
For instance: your rocket fuel in its container has to be pressurised, meaning it has to be forced into the container using a lot of energy.
Once that container valve is closed, that fuel now becomes potential energy until that valve is re-opened and the contents expelled for combustion or simply pressure against a medium/resistance.
Fuel being ejected out of a open chamber into a nozzle is going one way and one way only, which is out of the point of least resistance which is naturally the open end of the rocket.
On its way out the fuel causes friction against the side walls off whatever it flows through, whether that be a pipe or a chamber or a nozzle. However, this is where the con comes in with bogus rocket science, because we are meant to believe that this friction actually acts in reverse to the fuel being expelled.
Take a look at any rocket diagram and they show you the arrows pointing in reverse to the fuel being expelled. It's nonsense if people take the time to actually think about it.
It's like saying that grating cheese down a cheese grater will throw the cheese grater on the opposite direction to which the cheese is being pushed.
What's really happening is the cheese grater is on a worktop resisting the downward push of the cheese.
Anyone see what I'm saying?
Think of the fuel coming out of the rocket and hitting the sides of that rocket chamber/nozzle/pipes as it flows. It needs something to act as the worktop to stop the fuel and place a force back onto the rocket.
In space you do not have anything like that because it's like taking away the worktop and so, you cannot grate the cheese, which means you gain no work done at all.
This is why the rocket in space, recoil is ridiculous because recoil can only work against a resistance to energy and is why firing a gun creates it, in atmosphere.
In space you create nothing in a near vacuum as we are told and you only have to see what creating a very low pressure does to expand matter to know that your rockets in space are pure fantasy in how we are told they perform and what they actually are.
Like that video that So-carol keeps putting up. She uses it far too often to prove a point and it only proves a point to those who refuse to see what's really going on. The skateboard and medicine ball video I'm talking about.
People get told that the medicine ball is not pushing against atmosphere and it's simply the mass of the ball that propels the person in the opposite direction.
Think about the density of a medicine ball and how much atmosphere that ball actually displaces compared to a football.
What does a football have in it in abundance that the medicine ball does not have?
Answer: it obviously has a lot of atmosphere inside of it, meaning most of that ball in reality being pushed against the atmosphere would be of weak density/mass in displacing the atmosphere, because most of it is actually atmosphere.
The medicine ball holds some atmosphere in PORES of the structure but is mostly made up of repelling matter against the atmosphere, meaning it can displace one hell of a lot more.
What does this mean?
It means that there is a lot more atmospheric pressure upon that medicine ball and that medicine ball in the hands of a person has to resist that atmospheric push on it.
Think about the atmospheric push as a squeeze.
Think of it like someone grabbing you around your body and now you have to strain to release that grip to throw the person off you. You get pushed back because you are pushing into the same resistance for that ball.
The football creates little resistance against your body because it's already nearly equalised with the environment due to it being filled with atmosphere anyway.
People refuse to see how this works. They simply underestimate atmospheric pressure upon dense objects and the resistance it creates.
An easier way to view it is to show the area. Imagine that same medicine ball ironed out flat and stiff.
There's a lot of density/mass in it and so it will stretch out a good bit with a certain thickness.
For sake of argument let's go low sized and say that it flattens out 2 feet square and one inch thick.
Let's do the same with the football.
We can see that the football would be about 5 mm thick.
Which of the two will bend the most if you ran forward whilst holding them like a shield?
The answer is, the football would basically be bent around your arm due to the RESISTANCE of the atmosphere you pushed it against and you would feel a slight resistance to your running.
With your medicine ball sheet you will see that it will warp but it would create a much much bigger resistance to your run, meaning you use a lot more energy trying to push into the atmosphere with it.
I hope people can now see that atmospheric pressure has everything to do with these tests and these tests are designed to simply dupe you in a clever way because to the untrained eye or thought, it can appear that magical gravity and such like is the reason.
Nothing in your life works unless there is a pressure/resistant reaction to any action, meaning that your very existence and every step you take is reliant on pushing against the atmosphere, which includes rockets and their fuel, whether it's a water rocket or a fuel fire rocket.
For every action there is and has to be an equal and opposite reaction, which applies to atmosphere for which any mass applies energy against.
There can not be any reaction to an action if there is no resistance to it, which means that space as we are told, is fictional, which means that everything in this space is fictional, which means (as we are dealing with them) space rockets are simply fictional.