What is the first law of Thermodynamics?

Question

and can u tell me what the second law is?

Answer 1

The first law is energy cannot be created or destroyed, only converted from one form to another.

The second law is basically the entropy of the universe increases during any spontaneous process. This is more easily thought of as energy moves from areas of higher energy to areas of lower energy AS LONG AS IT IS NOT PREVENTED from doing so. In other words, energy disperses unless it's blocked.

Answer 2

THE LAWS OF THERMODYNAMICS--

In thermodynamics, there are four laws of very general validity, and as such they do not depend on the details of the interactions or the systems being studied. Hence, they can be applied to systems about which one knows nothing other than the balance of energy and matter transfer. Examples of this include Einstein's prediction of spontaneous emission around the turn of the 20th century and current research into the thermodynamics of black holes.

The four laws are:

Zeroth law of thermodynamics, stating that thermodynamic equilibrium is an equivalence relation.
If two thermodynamic systems are in thermal equilibrium with a third, they are also in thermal equilibrium with each other.

First law of thermodynamics, about the conservation of energy
The increase in the energy of a closed system is equal to the amount of energy added to the system by heating, minus the amount lost in the form of work done by the system on its surroundings.

Second law of thermodynamics, about entropy
The total entropy of any isolated thermodynamic system tends to increase over time, approaching a maximum value.

Third law of thermodynamics, about absolute zero temperature
As a system asymptotically approaches absolute zero of temperature all processes virtually cease and the entropy of the system asymptotically approaches a minimum value.

This law is more clearly stated as: "the entropy of a perfectly crystalline body at absolute zero temperature is zero."

Answer 3

The first is The increase in the internal energy of a thermodynamic system is equal to the amount of heat energy added to the system minus the work done by the system on the surroundings.
The second law basically says Heat cannot of itself pass from a colder to a hotter body

Answer 4

Thermodynamics is a branch of physics which deals with the energy and work of a system. It was born in the 19th century as scientists were first discovering how to build and operate steam engines. Thermodynamics deals only with the large scale response of a system which we can observe and measure in experiments. Small scale gas interactions are described by the kinetic theory of gases. The methods compliment each other; some principles are more easily understood in terms of thermodynamics and some principles are more easily explained by kinetic theory.

There are three principal laws of thermodynamics which are described on separate slides. Each law leads to the definition of thermodynamic properties which help us to understand and predict the operation of a physical system. We will present some simple examples of these laws and properties for a variety of physical systems, although we are most interested in thermodynamics in the study of propulsion systems and high speed flows. Fortunately, many of the classical examples of thermodynamics involve gas dynamics. Unfortunately, the numbering system for the three laws of thermodynamics is a bit confusing. We begin with the zeroth law.

The zeroth law of thermodynamics involves some simple definitions of thermodynamic equilibrium. Thermodynamic equilibrium leads to the large scale definition of temperature, as opposed to the small scale definition related to the kinetic energy of the molecules. The first law of thermodynamics relates the various forms of kinetic and potential energy in a system to the work which a system can perform and to the transfer of heat. This law is sometimes taken as the definition of internal energy, and introduces an additional state variable, enthalpy. The first law of thermodynamics allows for many possible states of a system to exist. But experience indicates that only certain states occur. This leads to the second law of thermodynamics and the definition of another state variable called entropy. The second law stipulates that the total entropy of a system plus its environment can not decrease; it can remain constant for a reversible process but must always increase for an irreversible process.

Answer 5

First law is the Law of Conservation of Energy (Internal energy is equal to heat transfer into the system minus work done by the system )

Second Law says entropy always increases (Basic principle: A cold thing can't suddenly transfer heat energy to a hotter object-energy diffuses)

Answer 6

The universe had a starting, consequently there have to be a purpose to it. - Yes, the gigantic bang, see how realistic that used to be. A telephone are not able to come approximately via different techniques like Abiogenesis (in keeping with telephone idea). - And for those who had been to turn out that you simply could have a Nobel Prize. However, the vigor within the universe have to have come from someplace in keeping with the legislation of causality. - Yes, the prior universe, with no sign of ending.

Answer 7

It is basically the law of conservation of energy.

Energy is not destroyed or created, only transferred or transformed.

Answer 8

Energy cannot be created or distroyed it is merely converted from one form to another