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Mark for Review

A particular black hole has a density of 1.0 × 106 kg/m3. A physicist is conducting a thought experiment in which she would like to approximate how much she would weigh if she had the density of a black hole rather than her current weight of 150 pounds, assuming her volume remained the same. Given that her overall body density is approximately 990 kg/m3 and that there are approximately 2.2 pounds in a kilogram, approximately how many pounds would she weigh in her thought experiment?

A

B

C

D


Correct Answer: B

Your Answer:

Explanation

(B) Divide 1.0 × 106 kg/m3 by 990 kg/m3 to determine by what multiple her weight will increase. Her weight will be 1,010 times greater. Then multiply 1,010 by 150 pounds to get 151,500 pounds.