Physics Final Exam chapter 7

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JJ73
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221126
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Physics Final Exam chapter 7
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2013-05-25 17:10:33
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  1. what are the six simple types of machines?
    • Lever
    • screw
    • inclined plane
    • pulley
    • wheel and axle
    • wedge
  2. what are the eight types of energy?
    • Gravitational potential Energy
    • Kinetic Energy
    • Heat Energy
    • Radiant Energy
    • Chemical Potential Energy
    • Elastic Energy
    • Electrical Energy
    • Nuclear Energy
  3. What is potential energy?
    The energy stored in an object due to its distance above the surface of the earth
  4. What is kinetic energy?
    The energy of a moving object
  5. What is total mechanical energy?
    The sum of the kinetic and potential energies.
  6. What is a machine?
    Mechanical devices that help do work
  7. What is the law of conservation of energy?
    In any transfer or transformation of energy, the total amount of energy remains constant
  8. Who stated the law of conservation of energy?
    Heinrich Von Helmholtz
  9. Power is always measured in Watts
    • 1000W=1kW
    • kilo means 1000

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