Topic 5 Crossword

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Across
  1. 2. a force whose work depends on the path followed between the given initial and final configurations
  2. 6. the ability to do work
  3. 9. the rate at which the body uses food energy to sustain life and to do different activities
  4. 14. oil, natural gas, and coal
  5. 16. (kW⋅h) unit used primarily for electrical energy provided by electric utility companies
  6. 19. the energy an object has by reason of its motion
  7. 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
  8. 25. the energy in a substance stored in the bonds between atoms and molecules that can be released in a chemical reaction
  9. 26. W) SI unit of power, with 1 W=1 J/s
  10. 27. the result, based on Newton’s laws, that the net work done on an object is equal to its change in kinetic energy
  11. 28. work done by the net force, or vector sum of all the forces, acting on an object
Down
  1. 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
  2. 3. the energy carried by a flow of charge
  3. 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
  4. 5. a force that does the same work for any given initial and final configuration, regardless of the path followed
  5. 7. those sources that cannot be used up, such as water, wind, solar, and biomass
  6. 8. the energy an object has due to its position in a gravitational field
  7. 10. the energy within an object due to the random motion of its atoms and molecules that accounts for the object's temperature
  8. 11. an older non-SI unit of power, with 1 hp=746 W
  9. 12. energy due to position, shape, or configuration
  10. 13. the total energy conversion rate of a person at rest
  11. 15. the sum of kinetic energy and potential energy
  12. 17. the energy carried by electromagnetic waves
  13. 18. energy released by changes within atomic nuclei, such as the fusion of two light nuclei or the fission of a heavy nucleus
  14. 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
  15. 22. SI unit of work and energy, equal to one newton-meter
  16. 23. the force between surfaces that opposes one sliding on the other; friction changes mechanical energy into thermal energy
  17. 24. the rate at which work is done
  18. 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