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RT:101 PHYSICS⚛️ > Chapter 02 Fundamentals Of Radiologic Science > Flashcards

Chapter 02 Fundamentals Of Radiologic Science Flashcards

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1
Q

The study of interactions of matter & energy

A

Physics

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2
Q

Three Base Quantities

A

Mass, Length, Time

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3
Q

The combination of one or more base
quantities

A

Secondary/Derived Quantities

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4
Q

Exposure, Dose, Equivalent Dose &
Radioactivity

A

Special Quantities

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5
Q

IBWM

A

International Bureau of Weights &
Measures

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6
Q

What is SI unit of Mass

A

Kilogram (kg)

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7
Q

What is SI unit of Length

A

Meter (m)

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8
Q

What is IS unit of Time

A

(s)

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9
Q

It has a magnitude & a unit

A

Measurement

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10
Q

Four Systems of Units

A

MKS
 CGS
 British
 SI

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11
Q

The segment of physics that deals with
motion at rest (statics) & objects in motion
(dynamics)

A

Mechanics

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12
Q

It is sometimes called speed

A

Velocity

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13
Q

He presented the fundamental laws of
motion

A

Isaac Newton (1686)

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14
Q

A body will remain at rest or will continue
to move with constant velocity in a straight
line unless acted on by an external force

A

Newton’s First Law: Inertia

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15
Q

The property of matter that acts to resist a
change in its state of motion

A

Inertia

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16
Q

The force (F) that acts on an object is equal
to the mass (m) of the object multiplied by
the acceleration (a) produced

A

Newton’s Second Law: Force

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17
Q

A push or pull on an object

A

Force

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18
Q

For every action, there’s an equal &
opposite reaction

A

Newton’s Third Law: Action/Reaction

19
Q

A force on a body caused by the pull of
gravity on it

A

Weight

20
Q

The product of mass of an object & its
velocity

A

Momentum

21
Q

The force applied times the distance

A

Work

22
Q

The rate of doing work

A

Power

23
Q

The ability to do work

A

Energy

24
Q

States that energy may be transformed from
one form to another but it cannot be created
or destroyed

A

Law of Conservation of Energy

25
Q

Two Forms of Mechanical Energy

A

Kinetic & Potential Energy

26
Q

The energy associated with the motion of an
object

A

Kinetic Energy

27
Q

The stored energy of position or
configuration

A

Potential Energy

28
Q

The KE of the random motion of molecules
 Unit: calorie

A

Heat

29
Q

The heat necessary to raise the temperature
of 1 g of water through 1o C

A

Calorie

30
Q

Three Ways of Heat Transfer

A

Conduction, Convection & Radiation

31
Q

The transfer of heat through a material by
touching

A

Conduction

32
Q

The mechanical transfer of “hot” molecules
in a gas or liquid from one place to another

A

Convection

33
Q

The transfer of heat by the emission of
infrared radiation
 An x-ray tube cools primarily by radiation

A

Thermal Radiation

34
Q

It is measured with a thermometer
 3 Scales: Celsius, Kelvin & Fahrenheit

A

Temperature

35
Q

The cooling agents used in MRI
 Liquid Nitrogen: boils at 77 K
 Liquid Helium: boils at 4

A

Cryogens

36
Q

The quotient of two numbers
 x/y: numerator/denominator

A

Fractions

37
Q

The quotient is less than one

A

Proper Fraction

38
Q

The quotient is greater than one

A

Improper Fraction

39
Q

It expresses the mathematical relationship
between two similar quantities

A

Ratio

40
Q

It expresses the equality of two ratios

A

Proportion

41
Q

System of numbers that is based on
multiples of 10

A

Decimal System

42
Q

If there are digits to the left of the decimal
point, the exponent will be positive
 If there are no nonzero digits to the left of
the decimal point, the exponent will be
negative

A

Decimal to Exponential Form

43
Q

It is based on two axes: x-axis & y-axis

A

Graphing

44
Q

The point where the two axes meet

A

Origin

RT:101 PHYSICS⚛️ (2 decks)

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