Thermodynamics

Thermodynamics

The study of heat and its transformation to mechanical energy is called thermodynamics. The basic principles and laws include absolute zero and the laws of thermodynamics.

First law of thermodynamics

“When heat flows to or from a system, the system gains or losses an amount of energy equal to the amount of heat transferred”

Heat transfers from one substance to the other substance because of particle collisions and when it does the giver of the heat and the receiver of the heat both face a change in the heat energy they were initially were before the transfer. This law is pretty obvious and its examples can be seen throughout the daily life which includes a heating pan or a car engine etc.

If we add heat to a isolated system the system or the object then it may do some work and increase its internal energy and this can be expressed as

Heat supplied to a system is equal to the sum of the external work done and the increase in the internal energy.

Second law of thermodynamics

“Heat always flows from hot object to cold object by itself”

This law clearly as we can observe states that heat energy always from the hot object to cold object. This law in other terms expresses the natural tendency of motion of heat energy. Due to the movement the ice melts and the heat or internal combustion engines work.

I fell that it is must mentioning the example of heat engine so I am doing so

The condition of absolute zero and absolute hot states that the object is at the state of zero kinetic energy or heat or maximum kinetic energy or heat at the molecular level.

The case of zero molecular movement of  the lowest temperature an object can be is the absolute zero and the highest is absolute hot which is equal to the planks temperature