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18. A group of engineers has landed on the moon, and they wish to
determine the mass of some rocks. They have a spring scale calibrated to
read pound mass at a location where the acceleration of gravity is 32.186
ft/s². One of the moon rocks gives a reading 18.26 on this scale. What is its
weight on the moon in lb? Take g (moon) = 5.32 ft/s².
a. 113.5
c. 18.77
b. 18.25
b. 110.47

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