Heat engines were first envisioned and built during the industrial revolution. explain the thermodynamics of a heat engine commenting on its efficiency. *your answer should be atleast a paragraph wrong anything less will be counted as incorrect *

Heat engines were developed during industrial revolution.

Generally a heat engine contains three parts i.e source, sink and working substance.

The source of a heat engine is present at a higher temperature as compared to the sink. Due to the temperature difference, the heat will flow from source to sink through working substance.

Let us consider   are the temperature of source and sink.

As the source is at higher temperature as compared to sink, heat will flow from source to sink.

are the heat provided by source and heat rejected to sink.

Hence, the work done by the working substance will be -

The efficiency of a heat engine is defined as the ratio of output to the input energy.

Here output = workdone [W]

Hence, the efficiency of a heat engine is calculated as -

This is the expression for the efficiency of heat engine.

Here, all the heat absorbed by the working substance can not be converted to desired output. The efficiency of a heat engine can not be 100 percent. Some amount of heat is lost in the form of sound and heat due to the friction which is produced due to the relative motion between various parts of the machine.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered