1. A hippo is dozing under water with only its small nostrils sticking out. It has a mass of 2700 kg and a volume of about 2.67 m3 after exhaling. How much force in Newtons does it exert on the ground of the pool (fresh water, density 1g/cm3)?
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.
1. A hippo is dozing under water with only its small nostrils sticking out. It has a mass of 2700 kg and a volume of about 2.67 m3 after exhaling. How much force in Newtons does it exert on the ground of the pool (fresh water, density 1g/cm3)?
2. A nozzle with an area of 0.3 cm2 is attached to a garden hose with an area of 1.8 cm2. The flow rate through the nozzle is 0.12 L/s.
What is the speed of the water in the hose in cm/s? (1 L= 1000 cm3)
What is the speed of the water in the nozzle in cm/s? (1 L= 1000 cm3)
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