Across
- 2. a force whose work depends on the path followed between the given initial and final configurations
- 6. the ability to do work
- 9. the rate at which the body uses food energy to sustain life and to do different activities
- 14. oil, natural gas, and coal
- 16. (kW⋅h) unit used primarily for electrical energy provided by electric utility companies
- 19. the energy an object has by reason of its motion
- 20. the rule that the sum of the kinetic energies and potential energies remains constant if only conservative forces act on and within a system
- 25. the energy in a substance stored in the bonds between atoms and molecules that can be released in a chemical reaction
- 26. W) SI unit of power, with 1 W=1 J/s
- 27. the result, based on Newton’s laws, that the net work done on an object is equal to its change in kinetic energy
- 28. work done by the net force, or vector sum of all the forces, acting on an object
Down
- 1. the general law that total energy is constant in any process; energy may change in form or be transferred from one system to another, but the total remains the same
- 3. the energy carried by a flow of charge
- 4. the stored energy of a spring as a function of its displacement; when Hooke’s law applies, it is given by the expression 12kx2 where x is the distance the spring is compressed or extended springconstant "k" - the representations of how eaily a spring can be compressed or stretched
- 5. a force that does the same work for any given initial and final configuration, regardless of the path followed
- 7. those sources that cannot be used up, such as water, wind, solar, and biomass
- 8. the energy an object has due to its position in a gravitational field
- 10. the energy within an object due to the random motion of its atoms and molecules that accounts for the object's temperature
- 11. an older non-SI unit of power, with 1 hp=746 W
- 12. energy due to position, shape, or configuration
- 13. the total energy conversion rate of a person at rest
- 15. the sum of kinetic energy and potential energy
- 17. the energy carried by electromagnetic waves
- 18. energy released by changes within atomic nuclei, such as the fusion of two light nuclei or the fission of a heavy nucleus
- 21. a measure of the effectiveness of the input of energy to do work; useful energy or work divided by the total input of energy
- 22. SI unit of work and energy, equal to one newton-meter
- 23. the force between surfaces that opposes one sliding on the other; friction changes mechanical energy into thermal energy
- 24. the rate at which work is done
- 27. the transfer of energy by a force that causes an object to be displaced; the product of the component of the force in the direction of the displacement and the magnitude of the displacement