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Radiographic Physics > Quiz 1 > Flashcards

Quiz 1 Flashcards

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0
Q

Significance of elements, Scientific Methods, First book of Physics.

A

Aristotle

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1
Q

Matter could be broken down to the smallest substance (atom).

A

Democritus

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2
Q

Mathematical application

A

Archimedes

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3
Q

Concept of acceleration, formulation of inertia and support of heliocentric theory.

A

Galileo Galilei

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4
Q

Three laws of motion, applied force and motion to natural elements.

A

Issac Newton

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5
Q

Discovered magnetic induction, Invented the electric motor.

A

Michael Faraday

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6
Q

Discovered the electron.

A

JJ Thompson

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7
Q

Father of nuclear physics, discovered the atomic nucleus.

A

Ernest Rutherford

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8
Q

Discovered radioactivity

A

Henri Becquerel

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9
Q

Discovered Radium

A

Marie Curie

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10
Q

Photoelectric effect

A

Albert Einstein

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11
Q

Fluoroscopy

A

Thomas Edison

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12
Q

Developed electromechanical technology and contributed to a/c applications.

A

Nikola Tesla

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13
Q

Discovered X-Rays 11/8/1895, working on crookes tube.

A

Wilhelm Roentgen

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14
Q

Anything that occupies space and mass

A

Matter

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15
Q

Newtons Three Laws

  1. Inertia
  2. F=ma
  3. Action/Reaction
A
  1. Object at rest stays at rest unless acted upon by an unbalanced force.
  2. Acceleration is produced when a force acts on a mass.
  3. Every action has an equal and opposite re-action.
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16
Q

Law Of Conservation

A

Energy is neither created or destroyed- reproduced in different forms.

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17
Q

Three main units

A

Length, mass, and time.

18
Q

Amount of protons, also number of electrons is the “Z” number.

A

Atomic number

19
Q

Total mass of neutron, proton and electrons (AMU)

A

Atomic Mass

20
Q

Quarks inside the nucleus are held together by a nucleus binding energy called

A

Gluons

21
Q

An atom is considered neutral when there are equal number of _______ and _______ (net charge = 0)

A

Protons and Neutrons

22
Q

Neutrons have

A

No charge or emisson

23
Q

Max number of electrons in each shell (K,L,M,N,O,P,Q) =

A

2n^2

24
Q

Electrons closest to the nucleus have the highest

A

Binding Energy

25
Q

Requires an energy equivalent or higher to remove it from a particular shell

A

Electron Binding Energy

26
Q

Chemical bond formed by two oppositely charged ions.. “Exchange”

A

Ionic

27
Q

Electron missing.. Cation..

A

Positive charge

28
Q

Gains an electron.. Anion..

A

Negative charge

29
Q

What is the standard international measurement of energy?

A

Joule

30
Q

Force necessary to provide a mass of one kilogram with an acceleration of one meter per second.

A

Newton

31
Q

Have No Mass
Have different energy in waves as electric and magnetic disturbances
All travel at the speed of light (3x10^8 m/sec) in a vaccum (Velocity)
Originate with the atom
Electrically charged moving particle generates a magnetic field.

A

Electromagnetic Energy

32
Q

Speed of light (Velocity)

A

186,400 miles/s
300,000 kilometers/s (3x10^5)
300,000,000 meters/s (3x10^8)

33
Q

Vary only in wavelength and frequency

A

Electromagnetic Radiation

34
Q

(Measured in hertz) number of times a wave passes through a point in 1 second.

A

Frequency

35
Q

Measurement from peak to peak of sinusoidal curve designated by the Greek letter lambda.

A

Wavelength

36
Q

Displacement from x axis on a graph (+/-)

A

Amplitude

37
Q

Frequency and wavelength are inversely proportional..

higher (f) ______ (w) = higher energy
lower (f) _______ (w) = lower energy

A

Shorter, Longer

38
Q

What is the wavelength formula?

A

Speed of light= Frequency x Wavelength (C=f x ¥)

39
Q

The __________ of an X-ray is between 10^-8 and 10^-11 meters/sec

A

Wavelength

40
Q

_______s are packets of pure energy with no mass that have frequency and wavelength.

A

Photons

41
Q

X-rays are electrically _________.

A

Neutral

42
Q

Gamma rays originate from the _________.

X-Rays originate from the ________ shell.

A

Nucleus, Electron

43
Q

X-Rays are _________.

A

Invisible

Radiographic Physics (3 decks)

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