How do we know that a fluid exerts an upward force on an object submerged in the fluid?
(a) Fluid pushes on the object in all directions.
(b) The reading of a scale supporting the object when submerged in the fluid is less than when not in the fluid.
(c) The fluid pressure on the bottom of the object is greater than the pressure on the top.
(d) Both (b) and (c) are correct.
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