21. A cork floats in water. If it is pushed further down, it will experience a buoyant force:
a) Greater than its weight
b) Lesser than its weight
c) Equal to its weight
d) Cannot be determined without further information
22. The buoyant force acting on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. This statement is known as:
a) Pascal’s law
b) Bernoulli’s principle
c) Newton’s second law
d) Archimedes’ principle
23. A helium-filled balloon floats in the air because:
a) The weight of the balloon is less than the buoyant force
b) The weight of the balloon is greater than the buoyant force
c) The weight of the balloon is equal to the buoyant force
d) None of the above
24. The buoyant force acting on an object submerged in a fluid is dependent on the:
a) Gravitational force
b) Atmospheric pressure
c) Surface area of the object
d) All of the above
25. An object will sink in a fluid if its density is:
a) Greater than the density of the fluid
b) Less than the density of the fluid
c) Equal to the density of the fluid
d) None of the above
