Exam 5: Fluid Mechanics

Two life preservers have identical volumes,one filled with Styrofoam and the other filled with sand.When each is worn by swimmers,one swimmer floats and the other sinks.Interestingly,the buoyant force is actually greater on the life preserver that

If we double the mass of an object without a change in volume,its density would be

A flask half filled with water is on a weighing scale.If you suspend a stone by a string into the water the scale reading will be

Evacuated Magdeburg hemispheres are each

When a gas in a container is squeezed to half its volume at constant temperature,its density

A hydraulic press multiplies a force by 100,which is compensated by

If one caisson of the Falkirk Wheel carries a boat loaded with Styrofoam and the other carries a floating boat loaded with iron,the wheel would be

When a boat sails from fresh water to salt water,the boat will float

As a helium-filled balloon rises in the air,it becomes

Compared to a bar of pure gold,the density of a pure gold ring is

Compared with a mercury barometer,the column height for a water barometer would be

An inverted empty jar is pushed downward into water so that trapped air inside can't escape.As it is pushed deeper,the buoyant force on the jar

A flask half filled with water is on a weighing scale.If you float a piece of wood in it,the scale reading will be

How much buoyant force acts on a 10-ton ship floating in a fresh-water lake?

Greta and her family float higher in the dense water of the Dead Sea because

Compared to the density of water,the density of a fish is

Strictly speaking,gas pressure inside an inflated stretched balloon is

Two equal-sized buckets are brim-filled with water,one with a piece of floating wood and the other without.If the buckets are put on a weighing scale,the heavier one is

A flask brim filled with water is on a weighing scale.If you float a piece of wood in it,after spillage away from the scale,the scale reading will be

Lobsters live on the bottom of the ocean.Compared with the density of seawater,the density of a lobster is