a draft is made of a plastic block with a density of 650kg/m^3, and its dimensions are 2.0mx3.0mx5.0m?

Question

1)what is the volume of the raft?
2)what is its mass?
3)what is its weight?
4)what is the raft's apparent weight in water?(hint:density of water=1.00x10^3kg/m^3
5)what is the buoyant force on the raft in water?
6)what is the mass of the displaced water?
7)what is the volume of the displaced water?
8)how much of the raft's volume is below water? how much is above ?
9)answe items 5-8 using ethanol(density=0.806x10^3kg/m^3)instead of water

Answer 1

1) V = 30 m^3
2) M = 19,500 kg
3) W = 191,229 N
4) Apparent weight in water is 0
5) BF = 191,229 N
6) DM = 19,500 kg
7) DV = 19.5 m^3
8) d = 1.3 m, h - d = 0.7 m
9) your turn (It still floats.)