Question 1

What will happen to the surface tension of water droplets when a surface-active agent is added?

Accepted Answer

A)  Nothing will happen. 
B)  It will increase. 
C)  It will decrease. 
D)  It will be eliminated. 
A)  Nothing will happen. 
B)  It will increase. 
C)  It will decrease. 
D)  It will be eliminated.

Question 2

How much pressure must be applied to maintain equilibrium between liquid and gaseous oxygen at its critical temperature?

Accepted Answer

A)  1 atm 
B)  37 atm 
C)  43.9 atm 
D)  49.7 atm 
A)  1 atm 
B)  37 atm 
C)  43.9 atm 
D)  49.7 atm

Question 3

A cylinder of compressed gas contains 1500 psig at 70° F; the cylinder is heated to 120° F.Which of the following effects will occur as a result of the temperature change?
1)There will be increased kinetic activity in the contents of the cylinder
2)The volume of gas in the cylinder will increase
3)The pressure indicated on the pressure gauge will increase.

Accepted Answer

A)  1 only 
B)  1 and 2 
C)  1 and 3 
D)  2 and 3 
A)  1 only 
B)  1 and 2 
C)  1 and 3 
D)  2 and 3

Question 4

The molecular weight of a gas divided by 22.4 L is used to express which of the following?

Accepted Answer

A)  Density 
B)  Diffusion rate 
C)  Partial pressure 
D)  Specific gravity 
A)  Density 
B)  Diffusion rate 
C)  Partial pressure 
D)  Specific gravity

Question 5

A major disadvantage of a series circuit is which of the following?

Accepted Answer

A)  It is limited to one load. 
B)  It can contain unlimited resistance. 
C)  Electrical current will stop if a break occurs anywhere along the path. 
D)  The circuit will remain up if a break occurs in one of the branches. 
A)  It is limited to one load. 
B)  It can contain unlimited resistance. 
C)  Electrical current will stop if a break occurs anywhere along the path. 
D)  The circuit will remain up if a break occurs in one of the branches.

Question 6

If 50% of the gas delivered to a patient is oxygen,its partial pressure at 1 atm is _____ mm Hg.

Accepted Answer

A)  265.0 
B)  356.5 
C)  380.0 
D)  403.5 
A)  265.0 
B)  356.5 
C)  380.0 
D)  403.5

Question 7

A hydrometer is usually associated with measuring which of the following?
1)Hydrogen content
2)Specific gravity
3)Weight density
4)Water vapor

Accepted Answer

A)  1 and 3 
B)  2 and 4 
C)  2 and 3 
D)  1,2,and 3 
A)  1 and 3 
B)  2 and 4 
C)  2 and 3 
D)  1,2,and 3

Question 8

Four horsepower (hp)is equal to how many kilowatts (kW)?

Accepted Answer

A)  5.36 
B)  2.98 
C)  2984 
D)  186.5 
A)  5.36 
B)  2.98 
C)  2984 
D)  186.5

Question 9

The most potential energy is contained by which state of matter?

Accepted Answer

A)  Gases 
B)  Solids 
C)  Liquids 
D)  Mixtures 
A)  Gases 
B)  Solids 
C)  Liquids 
D)  Mixtures

Question 10

For solids and liquids,density can be expressed in which of the following units?
1)g/L
2)mg/mL
3)g/cc
4)L/cc

Accepted Answer

A) 1 
B)  2 and 3 
C)  2 and 4 
D)  1, 2, and 3 
A) 1 
B)  2 and 3 
C)  2 and 4 
D)  1, 2, and 3

Question 11

Reynolds' number is derived from which of the following components?

Accepted Answer

A)  Velocity of flow, radius of tube, density of gas, and velocity of gas 
B)  Velocity of flow, length of tube, density of gas, and velocity of gas 
C)  Velocity of gas, radius of tube, viscosity of flow, and density of gas 
D)  Flow asymmetry, shape of tube, density of gas, and length of tube 
A)  Velocity of flow, radius of tube, density of gas, and velocity of gas 
B)  Velocity of flow, length of tube, density of gas, and velocity of gas 
C)  Velocity of gas, radius of tube, viscosity of flow, and density of gas 
D)  Flow asymmetry, shape of tube, density of gas, and length of tube

Question 12

If temperature is constant,which pressure results in the largest volume?

Accepted Answer

A)  15 mm Hg 
B)  760 mm Hg 
C)  1520 mm Hg 
D)  2000 mm Hg 
A)  15 mm Hg 
B)  760 mm Hg 
C)  1520 mm Hg 
D)  2000 mm Hg

Question 13

Electricity can be represented by the flow of which of the following?

Accepted Answer

A)  Negative ions through a nonconductive path 
B)  Negative ions over a nonconductive circuit 
C)  Electrons through a piece of copper wire 
D)  Electrons in a bidirectional path 
A)  Negative ions through a nonconductive path 
B)  Negative ions over a nonconductive circuit 
C)  Electrons through a piece of copper wire 
D)  Electrons in a bidirectional path

Question 14

The effects of buoyancy are best explained by:

Accepted Answer

A)  Archimedes principle. 
B)  Bernoulli principle. 
C)  Dalton's law. 
D)  Boyle's law. 
A)  Archimedes principle. 
B)  Bernoulli principle. 
C)  Dalton's law. 
D)  Boyle's law.

Question 15

At what temperature would you expect to see the highest water-vapor pressure?

Accepted Answer

A)  0° C 
B)  40° C 
C)  100° C 
D)  Absolute zero 
A)  0° C 
B)  40° C 
C)  100° C 
D)  Absolute zero

Question 16

The energy stored in heating oil is known as which of the following?

Accepted Answer

A)  Elastic 
B)  Atomic 
C)  Chemical 
D)  Gravitational 
A)  Elastic 
B)  Atomic 
C)  Chemical 
D)  Gravitational

Question 17

Which law states that when two gases are placed under the same temperature and pressure,the rates of diffusion of both gases are inversely proportional to the square root of their densities?

Accepted Answer

A)  Graham's law 
B)  Henry's law 
C)  Mole's law (also known as the ideal gas law) 
D)  Fick's law 
A)  Graham's law 
B)  Henry's law 
C)  Mole's law (also known as the ideal gas law) 
D)  Fick's law

Question 18

The potential energy of a compressed spring is known as which of the following?

Accepted Answer

A)  Gravitational 
B)  Chemical 
C)  Inelastic 
D)  Elastic 
A)  Gravitational 
B)  Chemical 
C)  Inelastic 
D)  Elastic

Question 19

Electrical hazards can be prevented by which of the following?
1)Properly grounding the circuit
2)Using ground fault circuit interrupters (GFCIs)
3)Using only Underwriters Laboratories (UL)-approved electrical equipment
4)Using as many extension cords as necessary to keep the wires out of the way

Accepted Answer

A)  1 and 2 
B)  3 and 4 
C)  2 and 3 
D)  1,2,and 3 
A)  1 and 2 
B)  3 and 4 
C)  2 and 3 
D)  1,2,and 3

Question 20

In the combined-gas law,n represents:

Accepted Answer

A)  Boltzmann's universal gas constant. 
B)  the atomic mass of the gas. 
C)  the number of moles of gas. 
D)  the partial pressure of a gas. 
A)  Boltzmann's universal gas constant. 
B)  the atomic mass of the gas. 
C)  the number of moles of gas. 
D)  the partial pressure of a gas.

What will happen to the surface tension of water droplets when a surface-active agent is added?

How much pressure must be applied to maintain equilibrium between liquid and gaseous oxygen at its critical temperature?

The molecular weight of a gas divided by 22.4 L is used to express which of the following?

A major disadvantage of a series circuit is which of the following?

If 50% of the gas delivered to a patient is oxygen,its partial pressure at 1 atm is _____ mm Hg.

A hydrometer is usually associated with measuring which of the following? 1)Hydrogen content 2)Specific gravity 3)Weight density 4)Water vapor

Four horsepower (hp)is equal to how many kilowatts (kW)?

The most potential energy is contained by which state of matter?

For solids and liquids,density can be expressed in which of the following units? 1)g/L 2)mg/mL 3)g/cc 4)L/cc

Reynolds' number is derived from which of the following components?

If temperature is constant,which pressure results in the largest volume?

Electricity can be represented by the flow of which of the following?

The effects of buoyancy are best explained by:

At what temperature would you expect to see the highest water-vapor pressure?

The energy stored in heating oil is known as which of the following?

Which law states that when two gases are placed under the same temperature and pressure,the rates of diffusion of both gases are inversely proportional to the square root of their densities?

The potential energy of a compressed spring is known as which of the following?

Electrical hazards can be prevented by which of the following? 1)Properly grounding the circuit 2)Using ground fault circuit interrupters (GFCIs) 3)Using only Underwriters Laboratories (UL)-approved electrical equipment 4)Using as many extension cords as necessary to keep the wires out of the way

In the combined-gas law,n represents:

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

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Exam 1: Basic Physics for the Respiratory Therapist

What will happen to the surface tension of water droplets when a surface-active agent is added?

How much pressure must be applied to maintain equilibrium between liquid and gaseous oxygen at its critical temperature?

The molecular weight of a gas divided by 22.4 L is used to express which of the following?

A major disadvantage of a series circuit is which of the following?

If 50% of the gas delivered to a patient is oxygen,its partial pressure at 1 atm is _____ mm Hg.

A hydrometer is usually associated with measuring which of the following? 1)Hydrogen content 2)Specific gravity 3)Weight density 4)Water vapor

Four horsepower (hp)is equal to how many kilowatts (kW)?

The most potential energy is contained by which state of matter?

For solids and liquids,density can be expressed in which of the following units? 1)g/L 2)mg/mL 3)g/cc 4)L/cc

Reynolds' number is derived from which of the following components?

If temperature is constant,which pressure results in the largest volume?

Electricity can be represented by the flow of which of the following?

The effects of buoyancy are best explained by:

At what temperature would you expect to see the highest water-vapor pressure?

The energy stored in heating oil is known as which of the following?

Which law states that when two gases are placed under the same temperature and pressure,the rates of diffusion of both gases are inversely proportional to the square root of their densities?

The potential energy of a compressed spring is known as which of the following?

Electrical hazards can be prevented by which of the following? 1)Properly grounding the circuit 2)Using ground fault circuit interrupters (GFCIs) 3)Using only Underwriters Laboratories (UL)-approved electrical equipment 4)Using as many extension cords as necessary to keep the wires out of the way

In the combined-gas law,n represents:

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters