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The buoyant force experienced by an object equals the weight of the fluid it displaces.

- Archimedes’ principle
- Pascal’s principle
- Bernoulli’s Law
- The ideal gas law

19 of 30

Changes in pressure are transmitted throughout a fluid.

- Archimedes’ principle
- Pascal’s principle
- Bernoulli’s Law
- The ideal gas law

20 of 30

A Pascal is equal to one

- Gram/cubic centimeter
- Joule/second
- Newton/square meter
- Joule/kilogram/Kelvin

20 of 30

The average kinetic energy of a particle in random thermal motion describes

- Heat
- Thermal Energy
- Mechanical Energy
- Temperature

21 of 30

1.0 L of gas is initially at a temperature of -73oC and a pressure of 80 kPa. If the temperature is raised to 23oC with no change of volume the new pressure will be:

- 27 kPa
- 120 kPa
- 160 kPa
- 180 kPa

18 of 30

If a 24 kg object rests on a surface with an area of 0.08 m2 it exerts a pressure of:

- 300 Pa
- 3.0 kPa
- 0.0033 Pa
- 55 psi

21 of 30

Which formula could be used to solve a problem about hydraulic lifts?

- P1V1/T1 = P2V2/T2
- DL=aLDT
- P=Po + rhg
- F1/A1=F2/A2

23 of 30

Which formula could be used to determine the pressure exerted by a fluid at a certain depth?

- FB=rVg
- r=m/V
- P=Po+rhg
- P=W/t

22 of 30

The increase in thermal energy needed to raise one unit of mass by one unit of temperature is called:

- Heat of vaporization
- Specific Heat
- Coefficient of linear thermal expansion
- Radiant Heat

19 of 30

The first law of thermodynamics states that:

- The internal energy of a system can be increased by doing work or adding heat.
- The bouyant force equals the weight of fluid displaced.
- The entropy of the universe is always increasing.

The relationship between heat energy and temperature change is given by the formula:

- Q=mcDT
- DL=aLoDT
- PV=nRT
- P=W/t

One kilogram of styrofoam has _____ density than one kilogram of iron

- A smaller
- A greater
- The same

If a loaf of bread is compressed, its _____

- Mass decreases
- Volume increases
- Density increases
- None of these

A wooden block has a mass of 800 g and a volume of 2 cm3. What is the block’s density?

- 800 g/cm3
- 400 g/cm3
- 1600 g/cm3
- 0.4 g/cm3
- 0.025 cm3/g

Water pressure is greatest against the _____

- Top of a submerged object
- Bottom of a submerged object
- Sides of a submerged object
- None of these

A completely submerged object always displaces an amount of fluid equal to its own:

- Volume
- Weight
- Density
- Mass

What is the buoyant force acting on a 34,000 N ship that is floating in the ocean?

- Less than 34,000 N
- 34,000 N
- More than 34,000 N
- Depends on the density of the sea water

What is the weight of water which is displaced by a floating 34,000 N ship?

- Less than 34,000 N
- 34,000 N
- More than 34,000 N
- Depends on the ship’s shape
- Depends on the density of the seawater

An object that is partly or entirely immersed in a liquid is buoyed up by a force that is:

- Equal to its own weight
- Equal to the weight of the fluid it displaces.
- Equal to the density of the fluid it is in.
- Equal to the volume of the fluid it is in.

A rock suspended by a weighing scale weighs 5.0 N out of water and 3.0 N when submerged in water. What is the buoyant force acting on the rock?

- 5.0 N
- 3.0 N
- 2.0 N
- 8.0 N
- None of these

Compared to an empty ship, the same ship loaded with styrofoam will float:

- Higher in the water
- Lower in the water
- At the same level in the water.

A block of styrofoam floats on a lake while a block of lead with equal volume lies submerged at the bottom of the lake. The buoyant force is greatest on the:

- Styrofoam
- Lead
- Is the same for both

A suction cup sticks to a wall. It is ____.

- Pulled to the wall by the vacuum
- Pushed to the wall by the atmosphere
- Both of these
- Neither of these

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