3. A hollow block of plastic floats on sea water (density 1030 kg/m') with 51.0% of its volume under sea water. Assume the specific gravity of plastic to be 0.91. [Answer in 3 significant figures] a) What is the average density of the block? b) When a 1.20 kg spherical weight is placed on the block, it still floats, but 100% of the block's volume is under the sea water (the weight is not in the water). What is the volume of the block?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
![3. A hollow block of plastic floats on sea water (density 1030 kg/m') with 51.0% of its
volume under sea water.
Assume the specific gravity of plastic to be 0.91. [Answer in
3 significant figures]
a) What is the average density of the block?
b) When a 1.20 kg spherical weight is placed on the block, it still floats, but 100% of the
block's volume is under the sea water (the weight is not in the water). What is the
volume of the block?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff89c5e82-2527-49f4-96f0-d8c4ad99581b%2Fcec28db6-20ef-466e-abc8-a2ded9060dd8%2F49tcota_processed.jpeg&w=3840&q=75)
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