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Which machine has the highest efficiency?
machine/ output work (j)/ input work (j)
A 750 1,500
B 1,000 4,000
C 450 600
D 3,000 5,000

machine C

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. C 450 600

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

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