2309: Module 1 General Principles Exam

What is the velocity of a bullet if it covers 12,000 meters in 3 seconds? -400 m/s -4,000 m/s -40,000 m/s

4,000 m/s Feedback: To find velocity, we divide the distance by the time.Objective: Accurately use general physics formulas.Reference: Module 1, Section 2, Screen 12

A quantity of radioactive iodine would be expressed in what unit of measure? -Roentgen -Rad -Rem -Curie

Curie Feedback: The curie is the unit of measure for radioactivity. The other units deal with exposure to something.Objective: Correctly utilize the special radiologic units.Reference: Module 1, Section 3, Screen 7

Mass changes with gravitational field. True False

False Feedback: It is weight that changes with gravitational field. Mass, the quantity of matter in an object, does not change.Objective: Correctly use general units of measure.Reference: Module 1, Section 2, Screen 17

A body's resistance to a change in its state of motion is: -Inertia -Velocity -Momentum -Acceleration

Inertia Feedback: While all of the options have to do with motion, inertia is that property of a body that resists a change in its state of motion.Objective: Explain matter, energy, and inertia, and give examples. Reference: Module 1, Section 2, Screen 17

Anything that occupies space and has shape or form is: -Mass -Matter -Energy -Inertia

Matter Feedback: Matter fits this definition. Mass is a measure of the quantity of matter and matter does have an energy equivalent known by the formula E = mc2.Objective: Explain matter, energy, and inertia, and give examples.Reference: Module 1, Section 2, Screen 16

If 7,000 represented the force applied to an object, which of the following units of measure should be used? -N -C/kg -m/s -k-m/s

N Feedback: The "N" represents Newton and is the unit of measure for force.Objective: Correctly use general units of measure.Reference: Module 1, Section 2, Screen 13

Which unit is based on the number of ion pairs created in air? -Roentgen -Rad -Rem -Curie

Roentgen Feedback: A roentgen is defined as that quantity of radiation that will produce 2.08 x 109 ion pairs in a cubic centimeter of air.Objective: Define the radiologic units of measure.Reference: Module 1, Section 3, Screen 4

Measuring the radiation output of an x-ray unit would be expressed in: -Roentgen -Rad -Rem -Curie

Roentgen Feedback: Output intensity in air is measured in roentgens. The rad and rem are for exposure to biologic matter and the curie is a measure of a quantity of radioactive material.Objective: Correctly utilize the special radiologic units.Reference: Module 1, Section 3, Screen 4

Fundamental quantities include all of the following except: -Mass -Velocity -Length -Time

Velocity Feedback: Mass, length, and time are fundamental quantities. Velocity is a derived quantity.Objective: Differentiate between fundamental and derived quantities.Reference: Module 1, Section 2, Screen 5

Mass, distance, and time are needed to determine what derived quantity? -Velocity -Force -Acceleration -Work

Work Feedback: Work is the only one of the options listed that requires mass, distance, and time to calculate.Objective: Differentiate between fundamental and derived quantities.Reference: Module 1, Section 2, Screen 15

What is the force needed to move a 110 kg patient at a rate of 1 meter per second? -110N -11N -1,100N

110N Feedback: To find force, we multiple mass times acceleration.Objective: Accurately use general physics formulas.Reference: Module 1, Section 2, Screen 13

A dose of 0.01 Sv may also be expressed as which of the following? -1 R -1 Rad -1 Rem -1 Curie

1 Rem Feedback: The Sv is the SI equivalent of the rem and .01 Sv is equal to 1 rem. Objective: Express radiologic units in both the Standard System and System International. Reference: Module 1, Section 3, Screen 6

What is the power used if 3,000 J is consumed in 3 seconds? -10 W -100 W -1,000 W

1,000 W Feedback: Power is found by dividing the work by the time.Objective: Accurately use general physics formulas.Reference: Module 1, Section 2, Screen 15

What is the work done if a force of 1,000 N is applied over a distance of 20 meters? -20,000 J -2,000 J -1,000 J

20,000 J Feedback: Work is found by multiplying the force times the distance.Objective: Accurately use general physics formulas.Reference: Module 1, Section 2, Screen 15

What is the momentum of a 200 kg portable if it travels 50 meters in 2.5 seconds? -10,000 kg-m/s -12,500 kg-m/s -4,000 kg-m/s

4,000 kg-m/s Feedback: Momentum is found by multiplying the mass times the velocity. In this problem, we must first find velocity which is distance divided by the time. Multiply that answer by the mass.Objective: Accurately use general physics formulas.Reference: Module 1, Section 2, Screen 14

Which of the following best describes the System International? -A system that uses the foot, pound, and minute -A system that uses the meter, pound, and minute -A system that uses the foot, kilogram, and second -A system that uses the meter, kilogram, and second

A system that uses the meter, kilogram, and second Feedback: The System International uses the meter, kilogram, and second. The British system uses the foot, pound, and second.Objective: Define the British System and System International.Reference: Module 1, Section 2, Screen 8

Which of the following is a unit of measure for a derived quantity? -Meter -Kilogram -Second -Newton

Newton Feedback: The Newton is a measure of force, a derived quantity. Mass, length, and time are all fundamental quantities.Objective: Differentiate between fundamental and derived quantities.References: Module 1, Section 2, Screens 8 and 9

Which of the following is a state of energy? -Chemical -Electrical -Potential -Thermal

Potential Feedback: Potential energy is a state of energy, the ability to do work by virtue of position. The others are forms of energy.Objective: Explain matter, energy, and inertia, and give examples.Reference: Module 1, Section 2, Screen 18

A health care worker's film badge report would be reported in which unit of measure? -Roentgen -Rad -Rem -Curie

Rem Feedback: The rem is the unit for occupational exposure and most appropriate for film badge reports.Objective: Correctly utilize the special radiologic units.Reference: Module 1, Section 3, Screen 6

Which of the following is the appropriate unit of measure for velocity? -N -C/kg -m/s -k-m/s

m/s Feedback: Velocity is an expression of distance traveled over time, or m/s.Objective: Correctly use general units of measure.Reference: Module 1, Section 2, Screen 12