Buoyancy: A person who weighs 550 N empties her lungs as much as possible and is then completely immersed in water of density 1000 kg/m3 while suspended from a harness. Her apparent weight is now 21.2 N. What is her density?
A. 1050 kg/m3
B. 1040 kg/m3
C. 1030 kg/m3
D. 960 kg/m3
E. 56.1 kg/m3
Answer: B
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