Is it possible for two bodies to be in thermal equilibrium if they are not in contact with each other?
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Asked in Physics
Two bodies Are in rotational equilibrium if they are at the same temperature?
Asked in Physics
If two bodies are in thermal equilibrium in one frame will they be in thermal equilibrium in all frames?
Asked in Science
When 2 bodies reach the same temperature transfer of energy stops. the bodies in contact reached their?
What direction does thermal energy naturally flow?
What is the zeroth law of thermodynamics?
If two thermodynamic systems are in thermal equilibrium with a third, they are also in thermal equilibrium with each other. In other words if two bodies are incontact with a third and they are the same temperature (pressure.... ect.) then it is safe to say that they are also in equilibrium with each other. This law is more of a common sense check.
What happens when two bodies having same temperature come in a contact?
Asked in Mechanical Engineering
What are the thermodynamics principles in mechanical engineering?
1st. Principle-- If two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. 2nd. Principle-- Heat energy and mechanical work are mutually convertible. 3rd.-- It is impossible to construct a mechanical device ( engine) whose sole purpose is to convert all of the heat energy supply to it into equal amount of work. 4th.-- The entropy of a pure crystalline substance at absolute zero temperature is zero
Asked in Science
Why do warm and cold bodies placed side by side attain the same temperature?
Systems (including heat systems) all tend to an equilibrium. What happens is the energy of the moving particles is transfered through contact (direct or indirect, such as by air) from the warmer, faster moving particles to the slower cold ones. After a time, the average kinetic energy of the two bodies is equal, and will trade energy at an equal rate (equilibrium).
Asked in Physics
In terms of differences in temperature what direction does heat flow between objects in thermal contact?
The heat will flow from the body with high temperature to the body with low temperature...the body of higher temperature loses the heat starts to become cold..and the body of lowest temperature gains the heat and starts to become hot..in this process when the temperature of both bodies reach in same temperature the two bodies will be in thermal equillibium condition..
Asked in Energy, Science Experiments, Scientific Method
What is the relationship between kintetic energy and temperature?
Temperature is the average kinetic energy on the molecular or atomic scale. From Rafaelrz. The Thermal Energy of gases is given by the sum of the molecules kinetic, rotational, vibrational and electronic energies. At a given temperature the gas molecules do not have a fixed amount of the mentioned energies. You'll find molecules with different amounts of energies, giving rise to a whole distribution of energy levels of the molecules. These distributions of energy are unique for a given temperature for a given gas. If we discuss the Ideal Gas, its molecules have only kinetic energy, and just one energy distribution for a given temperature. Liquid molecules have also these energies but in lower degrees especially kinetic energy. Molecules of solids have no kinetic nor rotational energies. So you see then, Thermal Energy is kind of chaotic. Temperature is defined in function of the concept of Thermal Equilibrium. 'When two isolated bodies are put in contact and no change in properties of the bodies are observed, then we say the two bodies are in Thermal Equilibrium. The property they have in common is called Temperature.' If the bodies above mentioned show a change in properties after being put in contact, then we say they were not in Thermal Equilibrium and so they did not have the same Temperature. A flow of Thermal Energy is responsible for the changes observed. This energy will flow from the body with the higher temperature to the body of the original low temperature, and so difference in temperature between two bodies becomes a difference in potential for heat transfer. Now, it is true that for a given substance higher temperature means higher thermal energy per unit mass. But for two different substances, equal Temperature will not mean equal thermal energy per unit mass. This is because they have different Specific Heat Capacities ( a property given in units of energy over unit of mass x unit of temperature ) and different Thermal Energy content at a standard ( or reference ) temperature. An important observation to make is that Temperature and Energy are two different dimensions. At the end, Temperature is related to the molecules energies. A last important characteristic of Temperature, is that it is a property that describes a system in equilibrium state showing molecular energy distributions. This makes 'Temperature' a statistical entity. That's why it is a Macroscopic Property like Pressure. They only apply to systems of very large number of molecules. When a single particle is associated with a Temperature, its energies have been compared with the average energy values of a macroscopic system of such particles, but it can not be compared in behaviour to the macroscopic system.
Asked in Physics, Definitions
What is the definition of temperature in physics?
Asked in Chemistry
The attractive force between two bodies of different substances that are in contact with eachother?
Asked in Pollution
What caues thermal pollution?
Thermal pollution is characterized by the increase or decrease in water temperature within streams, rivers and any natural bodies of water. The causes of thermal pollution are the removal of trees from the area that would normally provide shade and from factories or power plants that may dump the waste of hot water produced into the natural bodies of water.