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Text File  |  1999-02-05  |  267b  |  8 lines
  1.     Spider's web-building skills outrun the wheel
  2.  
  3. 1     Explain the difference between strength and toughness.
  4.  
  5. 2     a) Which is stronger, steel or spider's silk? b) Which of the two 
  6.     materials is tougher?
  7.  
  8. 3     Sketch stress/strain graphs for spider's silk and steel.