Answer:
density of second liquid = 650 kg/m³
Step-by-step explanation:
Given that:
The volume of the plastic block submerged inside the water = 0.5 V
The force on the plastic block =


when the block is floating, the weight supporting the force (buoyancy force) is:
W



where;
water density
= 1000

In the second liquid, the volume of plastic block in the water = (100-23)%
= 77% = 0.7 V
The force on the plastic block is:

when the block is floating, the weight supporting the force (buoyancy force) is:


