Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



Physics - Energy

Demian Quiroz

on 29 April 2010

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Energy

Energy System an arbitrary collection of objects and surroundings.
chosen to eliminate as many external forces as possible. Open Closed (Isolated) a system that does not interact with other systems
Total Energy does not change.
Energy stored within system
external interactions present
Energy enters or leaves system through transfer modes
W, Q, and R
First Law of Thermodynamics Working, Radiating, and Heating change the energy in a system. Conservation of Energy The total energy in a closed/isolated system does not change. Energy initial = Energy final Storage Modes Transfer Modes Internal to the system Chemical energy The energy that a person has from eating food. Gasoline or other fuels store this energy as well. Elastic Potential Energy energy stored in fuel, usually released due to a chemical reaction Gravitational Potential Energy Energy due to the position of the object above Earth. Energy stored in a spring through compression or stretching. Kinetic Energy The energy of motion Dissipated energy due to friction Various energies due to friction combined and preparing to leave the system through radiating and heating. Energy entering (+)
exiting (-) a system W Q R Working Working is the transfer of energy into or out of a system by means of an external force. Force in the direction of (parallel to) the displacement Heating Radiating Power Watt [W] = [J/s] = [N m/s] The capability to produce change Joule [J] = [Nm]
Full transcript