A Resting Object Exerts Pressure Equal To
Question: A resting object exerts pressure equal to
its mass times its contact area.
b. its weight times its contact area.
c. its mass divided by its contact area.
d. its weight divided by its contact area.
Answer: d
Question: Compared to the pressure exerted by a brick standing on its end, the pressure exerted by a brick resting on its side is
a. the same.
b. less.
c. more.
d. twice as much.
Answer: b
Question: The amount of water pressure you experience while swimming in a pool depends on
a. your buoyancy.
b. the area of the pool.
c. the volume of water in the pool.
d. how deep you are in the water.
Answer: d
Question: Which of the following is NOT true about the SI unit of pressure?
a. It is used for fluids only.
b. It is called a pascal.
c. It is equal to one newton per square meter.
d. It represents force per unit area.
Answer: a
Question: Blaise Pascal discovered that changes in pressure
a. are transmitted equally throughout a fluid.
b. increase with depth of fluid.
c. decrease with depth of fluid.
d. depend on area.
Answer: a
Question: In a hydraulic lift system, the output force is greater than the input force because
a. a larger pressure acts on the output piston.
b. a larger pressure acts on the input piston.
c. the fluid pressure acts on areas of different sizes.
d. of Bernoulli’s principle.
Answer: c
Question:
Answer: a
Question: The buoyant force acting on a submerged object is equal to
a. the object’s mass.
b. the object’s volume.
c. the mass of the fluid displaced by the object.
d. the weight of the fluid displaced by the object.
Answer: d
Question: A partially submerged object floats when
a. the object’s weight is equal to the buoyant force.
b. the object’s mass is equal to the buoyant force.
c. the object’s weight is greater than the buoyant force.
d. the buoyant force is downward.
Answer: a
Question: A submarine changes depth by altering its
a. speed.
b. density.
c. total area.
d. shape.
Answer: b