Mathematics and physics

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Across
  1. 3. helpful tool to count
  2. 5. the number to be divided
  3. 6. where you can find all the elementals
  4. 8. results plotted on coordinate system
  5. 10. part of physics that combines electricity and magnets
  6. 12. problem that includes like sign
  7. 13. number to divide by
  8. 15. usually a letter x
Down
  1. 1. for example gram or second
  2. 2. part of physics that is about the heat
  3. 4. for example mass or time
  4. 7. do this when you want to test nature
  5. 9. one divided by hundred
  6. 11. part of maths that is about different shapes
  7. 14. part of physics that is about movement and forces