Thermodynamics

Thermodynamics is put fisika for studying for kalor and explementary mechanical. On the more weight, termodinamika it is a studyter suhu and kalor,ext. Kinetic gas use in termodinamika to have concept termodinamika, since beginning XIX, people to success a answered machines can be working people and can use a live.
On termodinamika,from gas it we looking a system, people on the system (example gas place tube and air outside called environment)
1. Effort Outside
A tube is closed with sucker (piston) that move free without friction, and full ideal gas when does gas in tube heated, sucker will move. Said that gas does effort outside or do effort towards the environment. The big of out work is done by gas are:
W = F.∆s
W = .A.∆s
Because A.∆s= the change of volume, so
W = ∆V or W =  (V2-V1)
With:
F = pressure style of gas
∆s = transfer of exploitation
A = capacious of longitudinal section exploitation
 = pressure of gas
∆V = the change of volume
Except it can do out work, gas can accept out work too. Work is done by area for gas is the opposite of out work gas. Equation can we write:
W = - ∆V
2. Proccess is done by gas
The ideal of gas in the closed room can is changed it’s situation by various process, among isothermal process, isokhoric process, isobaric process and adiabatic process.
a. Isotermal Process
Isothermal process is the process of change situation of gas plural constant temperature ( T = constant). In isothermal process, be valid equation of situation ideal gas V = n.R.T. But, because T is constant an nR always is constant too. So stated by:
pV = constant
Or
1.V1=2.V2
with 1.V1 = pressure and volume in the first
2.V2 = pressure and volume in the end

b. Isokhorik process
Isokhorik process is a change process there is gas at permanent volume (V= permanent). In this process, gas use some ideal gas V = n.R.T or p:T=n.R:V because n.R:V = permanent
p:T= permanent or p1:T1=p2:T2

c. Isobaric process
Isobaric process is a change of gas condition in constant pressure. From equalion of ideal gas condition pV=nRT, with considered that p and nR always constant, finded connection
V:T = constant or V1:T1 = V2:T2
d. Adiabatic process
Adiabatic process is a change process gas condition where theren’t calor into or outside from system (gas) (Q = 0). This process is follow of poisson’s pattern such as:
p.V.γ= constant
or
p1.V1. γ =p2.V2. γ
with γ = Laplace constanta
γ = Cp:Cv
Cp = Calor capacity in constant pressure
C v = Calor capacity in constant volume
• For monoatomic gas
Cv = 3/2 nR dan Cp = 5/2 nR
• For diatomic gas
In low temperature ( ± 300 K)
Cv = 3/2 nR dan Cp = 5/2 nR
In medium temperature (± 500 K)
Cv = 5/2 nR dan Cp = 7/2 nR
In high temperature (± 1000 K)
Cv = 7/2 nR dan Cp= 9/2 nR