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Force per unit area. Density Buoyancy Pressure Power. 16 of 30. Mass per unit volume. Density Buoyancy Pressure Power. 20 of 30. Upward force experienced by an object immersed in a fluid. Density Buoyancy Pressure Power. 21 of 30.

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force per unit area
Force per unit area
  • Density
  • Buoyancy
  • Pressure
  • Power

16 of 30

mass per unit volume
Mass per unit volume
  • Density
  • Buoyancy
  • Pressure
  • Power

20 of 30

the buoyant force experienced by an object equals the weight of the fluid it displaces
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
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
A Pascal is equal to one
  • Gram/cubic centimeter
  • Joule/second
  • Newton/square meter
  • Joule/kilogram/Kelvin

20 of 30

density equals
Density equals:
  • m/V
  • F/A
  • rVg
  • aLoDT

21 of 30

the average kinetic energy of a particle in random thermal motion describes
The average kinetic energy of a particle in random thermal motion describes
  • Heat
  • Thermal Energy
  • Mechanical Energy
  • Temperature

21 of 30

slide12

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 m 2 it exerts a pressure of
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
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
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

when heat is added to a substance at its melting point its temperature increases
When heat is added to a substance at its melting point its temperature increases.
  • True
  • False

23 of 30

slide17
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

23 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

23 of 30

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

23 of 30

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

22 of 30

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 cm 3 what is the block s density

23 of 30

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

22 of 30

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

23 of 30

A completely submerged object always displaces an amount of fluid equal to its own:
  • Volume
  • Weight
  • Density
  • Mass
one liter of water has a mass of

22 of 30

One liter of water has a mass of:
  • 1 kg
  • 1 N
  • Both of these
  • Neither of these
what is the buoyant force acting on a 34 000 n ship that is floating in the ocean

21 of 30

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

19 of 30

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

21 of 30

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.
slide30

22 of 30

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

21 of 30

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.
slide32

23 of 30

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

22 of 30

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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