GMAT 考满分题库

- 数学PS -
The weight W of the object on the earth and the distance r between the object and the center of the earth satisfy the equation W=K/r^2. When r = 4000, w = 200. When r = 5000, what is w equal to?
  • A12.2
  • B12.4
  • C12.6
  • D12.8
  • E13
显示答案
正确答案: D

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