Author Question: A cubic meter of lead which weighs 105 N is submerged in water. The buoyant force acting on it is ... (Read 137 times)

tichca · **on:** Jul 29, 2018

A cubic meter of lead which weighs 105 N is submerged in water. The buoyant force acting on it is about

1) the weight of a cubic meter of water, 104 N
2) half the weight of lead, 1/2 105 N
3) the weight of lead, 105 N

because
4) the block loses half its apparent weight when suspended in water.
5) the block displaces 105 N of water.
6) the volume of water displaced is one cubic meter.

Question 2

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