Physics Chapter 19

What is the mass of a liter of water

1 kilogram

Any object with a volume of _________________ will experience a buoyant force of _____________ when fully submerged in water.

1 liter / 10 N

What does an objects density have to be for it to sink in water?

1.5 g/cm cubed

When iron is submerged, a solid 1-ton block of iron will display only _____________ ton of water.

1/8 (the buoyant force will be far from enough to keep it from sinking)

How much does a liter of water weigh

10 N

How many cubic centimeters does a liter of water occupy

1000 cubic centimeters

How much more dense is mercury from water

13.6

If a 1-liter bottle is filled with mercury what is its mass and weight?

13.6 kg mass & 136 N weight

Suppose a stone weighs 10 N in the air, but in water it weighs only 8N. What is the buoyant force acting on the stone?

2 N

What is a pressure if a force of 50N is exerted over an area of 10cm squared?

5 N/cm squared

What takes the shape of its container

A liquid

When was the Archimedes principle discovered and by who

Ancient times (third century B.C.) by the Greek philosopher Archimedes

Describes the relationship between buoyancy and displaced liquid

Archimedes' principle

Describes the relationship between buoyancy and displaced liquid. This principle is true for liquids and gases, which are both fluids

Archimedes' principle

States that the buoyant force on an immersed object is equal to the weight of the fluid it displaces

Archimedes' principle

Pressure is force divided by________________.

Area

What is an example of a hydraulic device?

Brake system in a car

Is the apparent loss of weight of objects when submerged in a liquid

Buoyancy

The force of a fluid that pushes an object up

Buoyancy

Is the net upward force exerted by a fluid on a submerged or immersed object

Buoyant force

The waters surface in each of the ______________ vases is at the same level. The pressure at equal depths are the same

Connected

Water has slightly different ________________at different temperatures.

Densities

How much a liquid weighs, and how much pressure it exerts, depends on ______________.

Density

Mass divided by volume

Density

The degree of compactness of a substance

Density

What does pressure in a liquid depend on?

Depth of the measuring point and mass of the liquid

What is the following procedure for: submerge the object in water in a measuring cup. Note the apparent increase in volume of the water. (Side note-The increase is equal to the volume of the submerged object)

Determine the volume of an irregularly shaped object

For example, at the bottom of all four vases the pressures would are ______________.

Equal

When the weight is ____________ to the buoyant force, the submerged object will remain at any level, like a fish

Equal

Does a safety jacket sink or float?

Float

Does a ship sink or float?

Float

Strength or energy as an attribute of physical action or movement

Force

A glass of water that is full to the top would have more pressure at the bottom than a ____________

Glass of water that is half full

If a submarines beneath the surface displaces a weight of water less than its own weight, it will________________.

Go down

What does the pressure of a liquid depend on

Gravity, the density, depth of liquid

A device using a hydronic cylinder to generate a compressive force

Hydraulic press

Hydraulic devices work on the principle that pressure in a fluid is exerted _______________________________________.

In all directions

What would cause an increase in pressure?

Increasing the force

What is eight times as dense as water?

Iron

Would a fish sink or float?

It would do neither sink or float because it has the same density as water

Are practically incompressible, at a given temperature, so the density is normally the same at all depths

Liquids

What is Archimedes' principle true for

Liquids and gasses (which are both fluids)

a coherent, typically large body of matter with no definite shape.

Mass

Neither the volume nor even the total weight of liquid ____________.

Matters

For the same depth, a denser liquid exerts _____________ pressure

More

Does the pressure of a liquid at rest depend on the shape of the container or the size of its bottom surface

No

The pressure of a liquid does _________ depend on the amount of liquid

Not

In the liquid phase, molecules can flow freely from position to position by sliding over_________________.

One another

Describes how change in a pressure are transmitted in a fluid

Pascal's principle

The _______________ of mercury on the bottom is 13.6 times the pressure of water.

Pressure

The continuous physical force exerted on or against an object by something in contact with it

Pressure

When a dam holds back water that is twice as deep it must withstand greater average water _____________, regardless of the total _______________ of water.

Pressure / Volume

What is the pressure created by a liquid

Pressure due to liquid = density x g x depth

The pressure of a liquid at rest depends on gravity and the density and the depth of the liquid

Pressure in liquid

If a submarine beneath the surface displaces a weight of water exactly its weight, it will ____________________.

Remain at constant depth

A boat floats in a tub of water. An iron block is in the boat. If the block is thrown overboard, what will the boat do?

Rise

If a submarine beneath the surface displaces a weight of water greater than its own weight, it will ____________.

Rise

The pressure of a liquid is the same at any given depth below the surface, regardless of the ______________ of the container

Shape

Does a submarine sink or float?

Sink

Does a fish sink or float?

Sink or float

1. An object more dense than the fluid in which it is immersed sinks. 2. An object less dense than the fluid in which it is immersed floats. 3. An object with density equal to the density of the fluid in which it is immersed neither sinks or floats

Sinking and floating rules

Does a crocodile sink or float?

Sinks or floats

Is water pressure deeper in a large but shallow lake, or a small but deep lake

Small but deep lake

If the volume of an object were to double while is mass remained the same, what would its density do?

Split in half

Which is easier; to lift a boulder submerged on the bottom of a riverbed or to lift it above the water's surface

Submerged on the bottom

What does "Pascal's vases" illustrate?

That water pressure depends on depth and not on volume

Liquids transmit pressure undiminished One piston is larger than the other piston Liquids transmit pressure in all directions

Why a hydraulic press works

Which object would sink and which object would float , wood and a rock?

Wood would float & rock would sink

What will happen when the submerged objects weight is less than the buoyant force

The object will rise to the surface and float

What will the happen if the weight of a submerged object is greater than the buoyant force

The object will sink

Where is the pressure greater, one meter beneath the surface of Lake Michigan or one meter beneath the surface of a swimming pool?

The pressure is approximately the same in both places

Why does an iron ship not sink?

The ship displaces more water that it would if it were in a solid block

The upward forces against the bottom of a submerged object are greater than the downward forces against the top. What kind of force is there

There is a net upward force, the buoyant force

The amount of space that a substance or object occupies or that is enclosed within a container, especially when great

Volume

When an object is submerged, it displaces a ____________ of water equal to the volume of the object itself

Volume

For the same volume of liquid, the weight of mercury is 13.6 times the weight of _______________.

Water

The heaviness of a person or thing

Weight

When would a crocodile be more dense?

When it eats stones

At what point would a canoe float lower in the water?

When people are in it