When swimming in the Dead Sea, people tend to float high in the water as compared with swimming in a fresh water lake. Why is this so? Select one:
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.
When swimming in the Dead Sea, people tend to float high in the water as compared with swimming in a fresh water lake. Why is this so? Select one:
a. The dead sea's density is higher than fresh water density by a fraction. The density gives a force up that is equal to the weight of the displaced water. Since density is higher, the displaced volume is larger for the same force.
b. The dead sea is very salty. Its density is almost the same as fresh water density. The buoyancy effect gives a force up that is less than the weight of the displaced water. Since density is more or less equal, the displaced volume is larger for the same force.
c. The dead sea is very salty. Its density is higher than fresh water density. The buoyancy effect gives a force up that equals the weight of the displaced water. Since density is higher, the displaced volume is smaller for the same force.
d. The dead sea is very salty. Its density is lower than fresh water density. The buoyancy effect gives a force up that is greater than the weight of the displaced water. Since density is lower, the displaced volume is smaller for the same force.
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