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6. how is friction not useful

  • when walking over rough surfaces
  • when walking over slippery surfaces
  • when walking

7. why do magnets repel or attract other magnets

  • because the north end attracts the south, but reppels the north of other magnets and visa versa
  • its randomised

8. what materials are magnetic

  • tin, copper, titanium
  • iron, steel, nickle
  • gold, silver, mercuary

9. how can forces be unbalanced

  • when the opposing forces are not equal
  • when the opposing forces are equal

10. Name a force

  • life
  • dogs
  • Gravitational
  • a website

11. what is hookes law state?

  • Issac newtons theories
  • that the strain in a solid is proportional to the applied stress within the elastic limit of that solid.
  • something to do with science

12. Describe how changing the core can affect the strength of an electromagnet

  • it strengthens the level of magnitism
  • it blows up

13. what direction do different forces act in

  • diagonally
  • south
  • opposing directions
  • same direction

14. how is friction useful

  • when walking over slippery surfaces
  • when walking over rough surfaces
  • when walking