Question

The density of a 57-kg (126-lb) person who can float in salt water but not in fresh water is about
1) 505 kg/m3 (32 lb/ft3)
2) 1010 kg/m3 (63 lb/ft3)
3) 2020 kg/m3 (126 lb/ft3)
4) 4040 kg/m3 (252 lb/ft3)
and has a volume of about
5) 1 ft3.
6) 2 ft3.
7) 3 ft3.
8) 4 ft3.
9) need more information

Answer

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