Example of the conservation of energy principle but not observed in nature.
Answer to Problem 5.1E
According to the rule of conservation of energy, energy can only be transformed from one form of energy to another and cannot be created or destroyed. This indicates that unless energy is added from the outside, a system always has the same quantity of energy.
Explanation of Solution
Given-Information: -
Law of conservation of energy.
Explanation: -
Energy can only be used by changing its form from one to another.
So, in a system, the amount of energy will be given as the following equation,
Where,
For example, if two bodies are at different temperatures and heat moves from one to the other, this is not a situation that occurs naturally.
Water is held at a height with potential energy, when it flows that potential energy is transformed into kinetic energy, and as it continues to flow, it produces
Ideal gas expansion is one example. It is necessary for the gas particles to have no volume and to have no attraction to one another at all. There can be no perfect gas because neither of those statements is possible.
Want to see more full solutions like this?
Chapter 5 Solutions
Fundamentals Of Engineering Thermodynamics
- Can a system have a higher second-law efficiency than the first-law efficiency during a process? Give examples.arrow_forwardBased on thermodynamics of a process, explain intermediary energy. Mention the three characteristic features of this intermediary energyarrow_forwardcan we do energy balance using the equation of first law of thermodynamics if the system is open? Explain.arrow_forward
- For a cycle, is the net work necessarily zero? For what kinds of systems will this be the case?arrow_forward(Thermodynamics)a 10 lbm is drop on a 5 kgm piston with a face area of 800 cm2 causing the cylinder to decrease in volume and produced a 2KW of Work with 4kgs/hr of gas exiting the fan and heat deflection of 0.5 KJ/Kg. Consider that the atmospheric pressure is 100 KPa, determine the change in internal energy, in KJ/Kg. Neglect the friction between the piston and the cylinder surface.arrow_forwardQ19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2*105 N/m2 to a final state of 1 m3 and 2*105 N/m2 , the pressure remaining the same. There is a transfer of 360 kJ of heat from the gas during the a process. How much does the internal energy of the gas changearrow_forward
- give a specific example of a process that has the energy changes and transfers described. (For example, if the question states “ΔEth > 0, W = 0,” you are to describe a process that has an increase in thermal energy and no transfer of energy by work. You could write “Heating a pan of water on the stove.”) ΔEth < 0, W ≠ 0, Q ≠ 0arrow_forwardGive the description of the following basic concepts of thermodynamics: System, closed systems, open systems, isolated systems, intrinsic and heat energy of a working fluid,arrow_forwardWhat is the Entropy Change of the Universe?arrow_forward
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY