# Which best describes the first law of thermodynamics?

## Which of the following describes the first law of thermodynamics?

The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed.19 мая 2015 г.

## Which is the best description of the first law of thermodynamics?

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another.

## What is the 1st law of thermodynamics quizlet?

1st law of thermodynamics. the total amount of energy in the universe is constant, energy cannot be created or destroyed, only transferred or transformed.

## What is the adiabatic form of the first law of thermodynamics?

change in air temp-pressure change. describes the adiabatic form of the first law of thermodynamics. absolute zero. temperature at which no more energy can be extracted from a substance and no further lowering of its temperature is possible. thermal motion and kinetic motion.

## What are the applications of first law of thermodynamics?

The first law of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic processes: The first law makes use of the key concepts of internal energy, heat, and system work. It is used extensively in the discussion of heat engines.

## What is the significance of First Law of Thermodynamics?

The first law of thermodynamics, arguably the most important, is an expression of the principle of conservation of energy. … Consistent with this principle, the first law expresses that energy can be transformed (i.e. changed from one form to another), but cannot be created or destroyed.

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## What is the study of thermodynamics?

Thermodynamics is the study of the flow of physical and chemical quantities (such as momentum, heat, fluid and chemical components) through or within a system driven by thermodynamic forces.

## How is heat transferred through radiation?

Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation. This is a type electromagnetic radiation .

## How is heat transferred through convection?

When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along. This type of heat transfer is called convection. … As the space heater heats the air surrounding it near the floor, the air will increase in temperature, expand, and rise to the top of the room.

## Which of the following is a law of thermodynamics?

Traditionally, thermodynamics has stated three fundamental laws: the first law, the second law, and the third law. A more fundamental statement was later labelled the ‘zeroth law’. The zeroth law of thermodynamics defines thermal equilibrium and forms a basis for the definition of temperature.

## Which mathematical equation represents the first law of thermodynamics?

The first law of thermodynamics is given as ΔU = Q − W, where ΔU is the change in internal energy of a system, Q is the net heat transfer (the sum of all heat transfer into and out of the system), and W is the net work done (the sum of all work done on or by the system).

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## Does the First Law of Thermodynamics imply a directionality in nature?

Does the First Law of Thermodynamics imply a directionality in nature? a. The first law does not tell anything about the directionality of process (energy transfer from cold water to surrounding or surrounding to ice). It simply quantifies the energy of a system.

Rudolf Clausius