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Quote from: hamdani yusuf on 28/07/2022 02:54:22A resonating tuning fork has higher average kinetic energy than a silent tuning fork.And a tuning fork inside a rocket has more kinetic energy than one on the ground. Or maybe not, if you are in the rocket. According to Einstein, it's the one on the ground that is receding at umpteen mph and thus has more kinetic energy. Hence the rather pedantic distinction between internal (thermal) and total (gross motion) kinetic energy. Physics is pedantic.
A resonating tuning fork has higher average kinetic energy than a silent tuning fork.
The fact that the electron gas model is widely accepted and in broad agreement with experimental results.https://en.wikipedia.org/wiki/Free_electron_model#Properties_of_an_electron_gasWhy do you ask?Have you a better model?
The free electron model presents several inadequacies that are contradicted by experimental observation.
If it is properly set up, most of the power is radiated away into space.Ideally, all of it would be radiated.The important bit is that practically none goes into increasing the KE of the electrons.
Quote from: alancalverd on 28/07/2022 11:01:35Quote from: hamdani yusuf on 28/07/2022 02:54:22A resonating tuning fork has higher average kinetic energy than a silent tuning fork.And a tuning fork inside a rocket has more kinetic energy than one on the ground. Or maybe not, if you are in the rocket. According to Einstein, it's the one on the ground that is receding at umpteen mph and thus has more kinetic energy. Hence the rather pedantic distinction between internal (thermal) and total (gross motion) kinetic energy. Physics is pedantic.So, what kind of motion is needed to increase temperature of a tuning fork?
If the electrons are prevented from moving along with the electric signal, will the antenna still radiate the power?
Quote from: hamdani yusuf on 26/07/2022 14:32:17If the gases are cooled down to near abolute zero, will they still have negative temperature?Could you at least try to think about your questions a bit before you ask them?If you have something at a negative temperature, and you want to get to absolute zero you don't cool it down, you warm it up.
If the gases are cooled down to near abolute zero, will they still have negative temperature?
Quote from: hamdani yusuf on 28/07/2022 15:12:01Quote from: alancalverd on 28/07/2022 11:01:35Quote from: hamdani yusuf on 28/07/2022 02:54:22A resonating tuning fork has higher average kinetic energy than a silent tuning fork.And a tuning fork inside a rocket has more kinetic energy than one on the ground. Or maybe not, if you are in the rocket. According to Einstein, it's the one on the ground that is receding at umpteen mph and thus has more kinetic energy. Hence the rather pedantic distinction between internal (thermal) and total (gross motion) kinetic energy. Physics is pedantic.So, what kind of motion is needed to increase temperature of a tuning fork? Wrong way round. If you heat the tuning fork, you will increase the mean kinetic energy of the atoms within it. In most cases this will increase the length of the arms and decrease its gross vibration frequency.
Quote from: hamdani yusuf on 28/07/2022 15:36:59If the electrons are prevented from moving along with the electric signal, will the antenna still radiate the power?Obviously not, which is why we use conductors for antennas.
None, until you ping it. Then it vibrates, but slower.
"Temperature is a measure of the average kinetic energy of the constituent atoms and molecules in a body". There being no other definition in my lifetime, that was always what was taught.
And a tuning fork inside a rocket has more kinetic energy than one on the ground. Or maybe not, if you are in the rocket. According to Einstein, it's the one on the ground that is receding at umpteen mph and thus has more kinetic energy.Hence the rather pedantic distinction between internal (thermal) and total (gross motion) kinetic energy. Physics is pedantic.
Is there a magnitude of negative temperature? Can an object have more negative temperature than another object? What would happen if they interact?
You still have not grasped the difference between internal kinesis and gross motion. This is worrying. By the age of about 6 months, a dog has a very clear concept of "inside" and takes care always to pee "outside".
What's the difference again? In simple English please.
Quote from: alancalverd on 28/07/2022 18:26:35You still have not grasped the difference between internal kinesis and gross motion. This is worrying. By the age of about 6 months, a dog has a very clear concept of "inside" and takes care always to pee "outside".What's the difference again? In simple English please.
I don't think that distinguishing between inside and outside is a circular argument. Though there is an ancient Greek story about a philosopher walking round a huge pillar whilst facing it, and wailing "I'm trapped".
Quote from: alancalverd on 30/07/2022 11:16:31I don't think that distinguishing between inside and outside is a circular argument. Though there is an ancient Greek story about a philosopher walking round a huge pillar whilst facing it, and wailing "I'm trapped". A spinning ball can have high kinetic energy, while maintaining its position in an inertial frame of reference. What makes you think that rotational energy as outside/external?
Quote from: hamdani yusuf on 19/03/2022 03:56:58The question is, what distinguishes thermal energy from kinetic energy?The motion having some sort of structure, rather than being random. Essentially, it's an effect of entropy.