University:
North Idaho College
Course:
PHYS-211 | Engineering Physics I
Academic year:

2023
Views:

241

Pages:

5
Author:

Hani T.

*Types of Systems. A system is a part of the physical Universe Chosen as the subject of Study The Investigations can be Eneoritical or experimental. It can be as simple as a Small Crystal Contam amount of gas under Specified Temperature and pressure, or even a known volume of liquid. in a Container Systems Can exist Without Surroundings in the immediate Vicinity of the system. Systems Can be classified into twee differt Types as : open System Closed System isolated System in open Systems , both mass as well as other distingushing properties energy can vary dm ≠ 0 dE ≠ 0 in Closed systems, the system is enclosed by impermeable walls. Mass remains Constant But energy can vary. dm = 0 dE ≠ 0 In isolated Systems in which Neither Mass nor energy vary. The system is Surrounded by an impermeable as well as adiabatic wall dm =0 dE = 0 Surroundings is the Area dr Volume outside The System . It includes The rest of the universe (except from the System) Which it is in position to exchange Mass and energy with The System. Figure a) Shows an open System, open Vessel Containing a liquid in contact with Its vapour. Matter and energy transfer can take place here. Surroundings Heat Heat Vapour Vapour Vapour Solvent Liquid Heat Ligind Liand a) open b) (Lused C) Isolated Adiabatic Insulated wall b) Shows Closed vessel Containing a Liquid in contact with Its vapour, energy can be exchanged but No matter exchange take place c) shows am Isolated Closed vessel Containing a liquid in contact with Its vapour, Here Neither Matter Nor energy can be exchanged with the surroundings, These are examples of the Types of Systems Systems can be classified as Homogeneous and Heterogeneous. a Homogeneous System is one which is completely uniform as in Mixture of gases. But Heterogeneous System is one that is Not uniform throughout.