generating electricity

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1. solar power is...

  • light/thermal energy from the sun- thermal energy of the water/ electrical energy for electricity
  • kinetic energy of the sun- thermal energy
  • heat energy of the sun- thermal energy of the water/ electrical energy for electricity
  • light/thermal energy from the sun- electrical energy
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2. power=

  • time taken / energy transferred
  • energy transferred/ time taken
  • energy transferred x time taken
  • time it takes to get to school x number of lessons

3. cost=

  • cost per unit / number of units
  • number of rooms in house x number of children
  • number of units x cost per unit
  • number of units / cost per unit

4. payback time=

  • savings per year / cost
  • cost / savings per year
  • cost x savings per year
  • saved money x income

5. tidal power is...

  • chemical energy of the water- gravitational potential energy
  • kinetic energy of the water- thermal energy
  • kinetic energy of the water- electrical energy
  • thermal energy of the water-electrical energy

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