There is a solid object which is put into water and alcohol successively. After it is still, the buoyancy wind received is 8N and 9N respectively. Find the density and mass of the object

There is a solid object which is put into water and alcohol successively. After it is still, the buoyancy wind received is 8N and 9N respectively. Find the density and mass of the object

Should be put into the water buoyancy is 9N; put into the alcohol buoyancy 8N?
Then we can know that the mass of the object is 0.9kg (take the value of G as 10, buoyancy in water = gravity)
Put into the alcohol, only 8N buoyancy, indicating that the object touched the bottom, but the question can not see is completely submerged in the alcohol, or partially submerged in the alcohol. So the volume can not be determined
When the object is completely immersed in alcohol, then: ρ (alcohol) GV (object) = 8N, the volume of the object can be obtained
If only part of the object is immersed in alcohol, there is no unique solution
Attachment: in fact, it is not clear whether the object touches the bottom when it is placed in the water. The title is not clear. At least there should be a picture in the title

There is a solid object which is put into water and alcohol successively. When the object is still, the buoyancy is 9N and 8N respectively
(1) Analyze the floating and sinking state (process) of objects in water and alcohol
(2) Finding the density of an object

(1) If the objects are floating, the buoyancy should be equal, so at least the alcohol is sinking
The density of alcohol is 0.8, the density of water is 1.0, so it floats in water
(2) The weight of the object is 9N and the force is 8N under the volume of alcohol
p0gV=mg=9,pgV=8
So P0 = 0.9 * 10 ^ 3kg / m ^ 3