The average density of the material in intergalactic space is approximately 2.5 × 10–27 kg/m3. What is the volume of a lead sample, r = 11 300 kg/m3, that has the same mass as 8.0 × 1024 m3 of intergalactic space? A child wants to pump up a bicycle tire so that its pressure is 1.2 × 105 Pa above that of atmospheric pressure. If the child uses a pump with a circular piston with a surface area equal to 9.6 x 10-4 m2 what force must the child exert?
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.
. The average density of the material in intergalactic space is approximately 2.5 × 10–27 kg/m3. What is the volume of a lead sample, r = 11 300 kg/m3, that has the same mass as 8.0 × 1024 m3 of intergalactic space?
A child wants to pump up a bicycle tire so that its pressure is 1.2 × 105 Pa above that of atmospheric pressure. If the child uses a pump with a circular piston with a surface area equal to 9.6 x 10-4 m2 what force must the child exert?
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