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Energy II

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    Energy revision
  •   Study   Slideshow
  • mass x gravity x height is the formula to calculate what type of energy
    Gravitational Potential Energy
  •  20
  • 1/2 x mass x velocity x velocity is the formula to calculate what type of energy
    Kinetic Energy
  •  25
  • The energy needed to ride a skateboard originally come from
    The sun as radiant energy
  •  15
  • State the Law of Conservation of Energy
    Energy cannot be created or destroyed only transferred or transformed
  •  15
  • When heat energy is changed into heat energy there is an energy
    Transfer
  •  15
  • When chemical energy is changed into light energy there is an energy
    Transformation
  •  15
  • Name five types of energy
    Kinetic, light, sound, heat, electrical, gravitational, elastic, chemical or nuclear
  •  15
  • At the top of the roller coaster the carts have
    Gravitational Potential energy
  •  15
  • At the top of the roller coater the carts have 50J, how much kinetic energy will they have when they reach the bottom
    50J
  •  15
  • What is the energy transformation when steam turns a turbine and the turbine generates electricity
    Kinetic energy to electrical energy
  •  15
  • What object can transform light energy into electrical energy
    Solar panel
  •  15
  • If a light bulb has the input energy of 100J and it produces 25J of heat, how much light energy is produced
    75J
  •  15
  • Calculate the potential energy if the mass of the object is 10kg, gravity is 10N and the height is 5m
    500J
  •  20
  • Calculate the efficiency from the diagram - useful energy 10J and input energy 100J
    10%
  •  15
  • Describe the energy transformation
    Gravitational potential energy to kinetic energy with the waste energy of heat from friction
  •  15
  • A ball with 50J of potential energy is dropped on two different surfaces, will the amount of energy the ball has change
    No, the total energy will be the same as the ball is dropped from the same height
  •  15