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All fluids exert pressure on the surface of any object in that fluid, but the pressure is not uniform over the surface of the object. Parts of the object that are deeper in the fluid will have more pressure from the fluid pressing against them than parts that are shallower. The amount of the object's surface that is being pressed down by fluid above it will be equal to the amount of surface being pressed up, but the pressure per unit area pressing up will be greater, on average, than the pressure that is pressing down.
A 1 square inch column of salt water 1 foot tall weighs just under 0.45 pounds, so it exerts a pressure of (about) 0.45 PSI. That pressure will be in addition to the pressure of any fluid that is pressing down on the top of the water column, such as the atmosphere. Thus the pressure on the surface of the ocean is about 14.7 PSI and the pressure at a depth of 1 foot is about 14.7 + 0.45, or 15.15 PSI.
If a cubic object 1 foot on each side was placed in the water with its top right at the surface the top of the cube would have 14.7 PSI * 144 square inches, or 2116.8 pounds of pressure pushing down on it. The bottom would have 15.15 PSI * 144 square inches, or 2181.6 pounds of pressure pushing up on it. The pressure on each side would equal the pressure on the opposite side, so there would be no net pressure pushing sideways. The difference in pressure pushing up and pressure pushing down would be 64.8 pounds, so there would be a buoyant force of 64.8 pounds pressing the object upward. Since the actual weight of the water column is a little bit less than 0.45 that actual buoyant force would be 64 pounds, which is the weight of 1 cubic foot of water. Thus the object is buoyed up by a force equal to the weight of the fluid it displaces.
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If two identical objects are placed in different fluids the buoyant force will be greater on the object in the?
The buoyant force will be greater on the object in the denser fluid.
Which of the objects below will have the largest buoyant force exerted on it when placed in the ocean?
A large cruise ship.
Which of these objects will not have enough buoyant force exerted on it to keep it from sinking when placed in Erik's bathtub full of water?
A glass marble
What kind of force do liquids and gases exerts on objects placed in them?
the answer to thins question in inside your pants hahah but no its resistance
Archimedes' principle states that an object placed in a fluid will experience a buoyant force to the weight of the fluid it displaces true or false?
TRUE
Three different liquids and two equal sized cubes are placed in a beaker which of the objects has the greater buoyant force acting on it?
The answer is the beaker on the top because it has less mass
If you are buoyant you can?
Not sure what you are looking for. This is Archimede's principle though, A buoyant object experiences an upward force, and at the same time displaced the medium in which it is placed. Is that what you were looking for? Basically...you float
Liquids and gases exert a buoyant force on object placed in them?
Yes, liquid and gases exert a buoyant force on object because of the surface tension of the fluid.
Does the more displaced liquid more buoyant?
Buoyant force = volume x density x acceleration due to gravity So more the volume greater the buoyant force ___________________________________ The volume above must be volume of liquid displaced, not the volume of the object placed in the liquid.
What will happen if the buoyant force of a liquid is less than the weight of an object placed in that fluid?
The object will sink in the fluid.
What happen if the buoyant force of a fluid is less than the weight of an object placed in the fluid?
The object will sink in the fluid.
How are objects placed in space?
By the use of rockets
