Chapter 13 Forces in Fluids

If a barrel of water in a rowboat in a swimming pool is poured overboard, the pool's water level

• rises

• falls

• remains unchanged

The buoyant force on an object is least when the object is

• partly submerged

• submerged near the surface

• submerged near the bottom

• none of the above

The volume of water displaced by a floating 20 ton boat

• is the volume of the boat

• is the volume of 20 tons of water

• depends on the shape of the hull

• is 20 cubic meters

A completely submerged object always displaces its own

• weight of fluid

• volume of fluid

• density of fluid

• all of the above

Water pressure on a submerged object is greatest against its

• top surface

• bottom surface

• same against all surfaces

• side surfaces

The concept of pressure involves both

• area and volume

• force and area

• force and volume

• mass and density

What is the weight of water displaced by a 100 ton floating ship?

• depends on the ships shape

• more than 100 tons

• 100 tons

• less than 100 tons

When scrap iron in a boat is thrown overboard in a

swimming pool, the pool's water level

• rises

• falls

• remains unchanged

The pressure in a liquid depends on the liquid's

• depth

• density

• both of these

• none of the above

A block of Styrofoam floats on water while a lead block of the same size lies submerged in the water. The buoyant force is greatest on the

• Styrofoam

• lead

• same for both