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.
Please help me in answering this question
![Usually the balloon in the van would try to go straight up, what is responsible for it
going towards the back of the van?
f
GA
O The tension in the string is pushing the balloon backwards.
D
e
There is a higher density of air at the back of the van, which causes the helium
balloon to be pulled towards the back of the van.
Quil
O Nothing is forcing it backwards, as the van accelerates forwards the balloon
naturally wants to remain where it was in the Earth frame of reference, according
to Newton's first law of motion.
There is a higher density of air at the front of the van, which causes the helium
balloon to be pushed away from the front of the van.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fea5905a8-40bb-4933-b9a7-f91dabddde61%2F8e099429-01de-4690-866e-89b8b7d103d6%2Faygeshf_processed.jpeg&w=3840&q=75)
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