30. If a person goes to the bottom of a deep mine shaft on a planet of uniform density, which of the following is true?
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30. If a person goes to the bottom of a deep mine shaft on a planet of uniform density, which of the following is true?
30. If a person goes to the bottom of a deep mine shaft on a planet of uniform density, which of the following is true? (A) The person's weight is exactly the same as at the surface. (B) The person's weight is greater than at the surface. The person's weight is less than at the surface. (D) The person's weight may increase or decrease, depending on the density of the planet. (E) The gravitational force on the person changes in direction but not in magnitude.
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