The mass of a measuring cylinder is 190 g.
$400c{m^3}$ of liquid is put into the measuring cylinder.
The total mass of the measuring cylinder and the liquid is 560g.
Four solid objects are lowered in turn into the liquid. The densities of the objects are shown.
1 $0.04g/c{m^3}$
2 $0.90g/c{m^3}$
3 $1.2g/c{m^3}$
4 $2.7g/c{m^3}$
Which objects will float in the liquid?
1 )
1 only
1 and 2 only
3 )
1, 2 and 3
4 )
3 and 4 only
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