{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

conservation of energy

# conservation of energy - Chapter 8 Conservation of Energy...

This preview shows pages 1–4. Sign up to view the full content.

1 Chapter 8 Conservation of Energy Energy Review Kinetic Energy Associated with movement of members of a system Potential Energy Determined by the configuration of the system Gravitational and Elastic Internal Energy Related to the temperature of the system

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 Types of Systems • Nonisolated systems Energy can cross the system boundary in a variety of ways Total energy of the system changes Isolated systems Energy does not cross the boundary of the system Total energy of the system is constant Ways to Transfer Energy Into or Out of A System Work – transfers by applying a force and causing a displacement of the point of application of the force Mechanical Waves – allow a disturbance to propagate through a medium (listening radio) Heat – is a mechanism of energy transfer driven by a temperature difference between two regions in space (conduction, convection) Matter Transfer – matter physically crosses the boundary of the system, carrying energy with it Electrical Transmission – transfer is by electric current Electromagnetic Radiation – energy is transferred by electromagnetic waves
3 Isolated System For an isolated system, Δ E mech = 0 Remember E mech = K + U This is conservation of energy for an isolated system with no nonconservative forces acting The changes in energy can be written out and rearranged K f + U f = K i + U i Remember, this applies only to a system in which conservative forces act If nonconservative forces are acting, some energy is transformed into internal energy Conservation of Energy becomes Δ E system = 0 – E system is all kinetic, potential, and internal energies

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

conservation of energy - Chapter 8 Conservation of Energy...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online