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DONT KNOW P2 Flashcards

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1
Q

WHAT HAPPENS WHEN A NUCLEAR EVENT OCCURS

A

TOTAL BINDING ENERGY INCREASES

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2
Q

WHAT IS BINDING ENERGY

A

ENERGY REQUIRED TO SPLIT A NUCLEUS INTO ITS CONSTITUENT NUCLEONS

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3
Q

HOW IS FISSION INDUCED

A

BOMBARDING U235 WITH NEUTRONS TO MAKE U236 WHICH IS UNSTABLE AND CAN THEN UNDERGO FISSION

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4
Q

HOW ARE XRAYS PRODUCED

A

FIRING ELECTRONS AT A HEAVY METAL TARGET (TUNGSTEN)

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5
Q

WHAT DOES ATTENUATED MEAN

A

ABSORBED, REDUCED INTENSITY

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6
Q

SIMPLE SCATTERING IN XRAYS

A

PHOTON CHANGES DIRECTION

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7
Q

COMPTON SCATTERING IN XRAYS

A

PHOTON REMOVES ELECTRON, BUT RE-EMITTED AS A LONGER WAVELENGTH

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8
Q

HOW DOES TRANSMITTED XRAY INTENSITY VARY WITH DISTANCE

A

EXPONENTIALLY

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9
Q

WHAT DOES A CONTROL ROD DO

A

ABSORBS NEUTRONS, NO FISSION

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10
Q

WHAT DOES A FUEL ROD DO

A

CONTAIN URANIUM NUCLEI WHICH UNDERGO FISSION WHEN A NEUTRON IS ABSORBED

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11
Q

WHAT DOES A MODERATOR DO

A

SLOWS NEUTRONS DOWN SO THEYRE ABLE TO BE ABSORBED BY URANIUM NUCLEI IN ANOTHER ROD

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12
Q

WHAT DOES COOLANT DO

A

TAKES KINETIC ENERGY TO WATER TO MAKE STEAM, WHICH TURNS THE TURBINE

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13
Q

CAT ABBREVIATION

A

COMPUTERISED AXIAL TOMOGRAPHY

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14
Q

CAT PROCESS

A

ROTATING X-RAY TUBE AROUND PATIENT.
RAYS DETECTED BY DETECTORS
BUILDS 2D CROSS SECTION IMAGES

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15
Q

WHY IS A LIQUID CONTRAST USED

A

TO HELP MAKE THE IMAGE CLEARER WHEN THERES LESS CONTRAST

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16
Q

A-SCAN FEATURES

A

STATIONARY TRANSDUCER
ONLY MEASURES DEPTH USING TIME TO REFLECT

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17
Q

GAMMA CAMERA COMPUTER

A

PROCESS SIGNALS TO PRODUCE IMAGES

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18
Q

GAMMA CAMERA PHOTOMULTIPLIER TUBES

A

CONVERT PHOTON ENERGY INTO ELECTRICAL SIGNAL

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19
Q

GAMMA CAMERA SCINTILLATOR

A

ABSORBS GAMMA PHOTONS AND RE-EMITS MANY VISIBLE PHOTONS

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20
Q

GAMMA CAMERA COLLIMATOR

A

ENSURES RAYS ARE PARALLEL INTO DETECTION CAMERA

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21
Q

WHAT HAPPENS WHEN ULTRASOUND MEETS A MEDIUM WITH DIFFERENT ACOUSTIC IMPEDENCE

A

PARTIAL REFLECTION

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22
Q

B-SCAN FEATURES

A

MULTIPLE A-SCANS WHEN MOVING SIDEWAYS
2D IMAGE IS PRODUCED

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23
Q

TRANSDUCER PROCESS

A

PRODUCES ULTRASOUND BY VARYING PD TO AN ARRAY OF PIEZOELECTRIC SIGNALS, CRYSTALS VIBRATE AND ARE DETECTED, IMAGE IS PRODUCED

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24
Q

DOPPLER SCAN

A

MEASURES FLOW RATE BY DETECTING CHANGE IN FREQUENCY/WAVELENGTH OF ULTRASOUND REFLECTED OFF OF RED BLOOD CELLS

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25
PET PROCESS
POSITRON RICH SUBSTANCE IS INJECTED IN POSITRONS ANNIHILATE WITH ELECTRONS PAIR OF PHOTONS PRODUCED PHOTON PAIR DETECTED BY DETECTORS POINT OF ORIGIN IS CALCULATED IMAGE IS PRODUCED
26
ULTRASOUND GEL
ATTEMPTS TO MATCH ACOUSTIC IMPEDANCE BETWEEN SKIN AND TRANSDUCER, TO MINIMISE REFLECTIONS BEFORE ENTRY
27
NUCLEAR WASTE PROCESS
FISSION FRAGMENTS INTO ACID POOLS ENCASED IN POROUS GLASS - NO LEAKS BURIED DEEP UNDERGROUND - MINIMISE RADIATION EXPOSURE TO ORGANISMS
28
WHAT HAPPENS IFTWO MEDIUMS HAVE EQUAL IMPEDANCE
ACOUSTICALLY MATCHED - NO SOUND IS REFLECTED
29
WHAT DOES A COHERENT LIGHT SOURCE HAVE
CONSTANT PHASE DIFFERENCE
30
HOW IS CONSTRUCTIVE/DESTRUCTIVE INTERFERENCE DETERMINED
PATH DIFFERENCE IS MEASURED
31
ANTI PARTICLES CHARACTERISTICS
SAME MASS OPPOSITE CHARGE
32
STRONG NUCLEAR FORCE PURPOSE
KEEPS NUCLEUS IN PLACE BY HOLDING NUCLEONS TOGETHER
33
MATTER AND ANTIMATTER CATEGORIES
LEPTONS & HADRONS LEPTONS = NEUTRINOS, MUONS HADRONS = BARYONS & MESONS
34
STRONG NUCLEAR FORCE REPULSIVE RANGE
UP TO 0.5FM
35
STRONG NUCLER FORCE ATTRACTIVE RANGE
0.5FM-3FM
36
WHAT IS PHOTOELECTRIC EFFECT EVIDENCE FOR
SAYING WAVES BEHAVE LIKE PARTICLES
37
PHOTOELECTRIC EFFECT IN DETAIL
IF LIGHT IS FIRED AT METAL WITH SUFFICIENT FREQUENCY, AN ELECTRON WILL BE REMOVED FROM THE SURFACE OF THE METAL
38
ANNIHILATION
PARTICLE AND ITS ANTI-PARTICLE MEETING, ALL MASS IS CONVERTED INTO ENERGY IN THE FORM OF TWO PHOTONS, TO CONSERVE MOMENTUM
39
PAIR PRODUCTION
A PHOTON OF SUFFICIENT ENERGY IS CONVERTED INTO A PARTICLE AND ITS CORRESPONDING ANTI-PARTICLE
40
MOTOR EFFECT
CURRENT-CARRYING WIRE IN A MAGNETIC FIELD WILL EXPERIENCE A FORCE
41
WHAT DOES B STAND FOR IN F=BIL
MAGNETIC FLUX DENSITY
42
HOW TO FIND MAGNETIC FLUX DENSITY
PLACE MAGNET ON WEIGHING SCALES MEASURE MASS WHEN KNOWN CURRENT FLOWING CONVERT FROM MASS TO WEIGHT (N) MEASURE LENGTH OF WIRE IN FIELD REARRANGE F=BIL TO CALCULATE B
43
WHAT DOES A SIMPLE GENERATOR CONSIST OF
A SPINNING COIL IN A MAGNETIC FIELD
44
WHAT IS CONSERVED IN INTERACTIONS
CHARGE BARYON NUMBER LEPTOP NUMBER
45
STOPPING POTENTIAL
ENERGY REQUIRED TO MAKE CURRENT 0
46
WORK FUNCTION
MINIMUM ENERGY REQUIRED TO REMOVE AN ELECTRON FROM THE SURFACE OF A METAL
47
THRESHOLD FREQUENCY
MINIMUM FREQUENCY REQUIRED TO REMOVE AN ELECTRON
48
WHAT DOES IN INCREASED INTENSITY OF LIGHT RESULT IN
GREATER RATE OF LIBERATION AND INCREASED CURRENT
49
WHAT IS FLUX
MEASURE OF HOW MUCH MAGNETISM PASSES THROUGH AN AREA
50
FARADAYS LAW
INDUCED EMF IS PROPORTIONAL TO RATE OF CHANGE OF FLUX LINKAGE
51
LENZ'S LAW
DIRECTION OF INDUCED EMF IS SUCH THAT IT OPPOSES THE CHARGE WHICH CAUSED IT
52
FREE CHARGED PARTICLE RULE
ANY CHARGE MOVING IN A MAGNETIC FIELD WILL EXPERIENCE A FORCE PERPENDICULAR TO ITS VELOCITY
53
BETA DECAY
BETA PARTICLE AND ANTINEUTRINO
54
BARYON NUMBER OF ALL QUARKS
1/3
55
WHAT HAPPENS TO FLUX WHEN COIL IS PARALLEL TO MAGNETIC FLUX DENSITY
ZERO
56
WHAT HAPPENS TO FLUX WHEN COIL IS PERPENDICULAR TO MAGNETIC FLUX DENSITY
AT A MAXIMUM
57
TRANSFORMER CONSTRUCTION
COILS WRAPPED AROUND SOFT IRON CORE
58
WHAT HAPPENS WHEN A CHARGED PARTICLE ENTERS A FIELD AT A RIGHT ANGLE TO THE FIELD
ITS TRAJECTORY WILL BE PARABOLIC
59
RESISTANCE OF SUPERCONDUCTORS
0
60
RESISTIVITY DEFINITION
RESISTANCE OF A CUBE OF UNIT LENGTH SIDES
61
WHAT IS PD
MEASURE OF HOW MUCH ENERGY IS TRANSFERRED TO EACH COULOMB OF CHARGE
62
HOW ARE VOLTMETERS CONNECTED WITH COMPONENTS
IN PARALLEL
63
HOW ARE AMMETERS CONNECTED WITH COMPONENTS
IN SERIES
64
HOW CAN YOU SEE HOW CURRENT VARIES WITH PD
USE A VARIABLE RESISTOR IN SERIES TO VARY ITS P.D
65
SERIES CIRCUIT RULES
TOTAL PD SHARED BETWEEN COMPONENTS CURRENT IS SAME FOR ALL COMPONENTS TOTAL RESISTANCE = SUM OF RESISTANCES
66
PARALLEL CIRCUIT RULES
P.D OF EACH BRANCH = P.D OF BATTERY CURRENT IS SPLIT BETWEEN BRANCHES MORE RESISTORS IN PARALLEL = REDUCED RESISTANCE
67
EMF DEFINITION
ENERGY SUPPLIED TO EACH UNIT CHARGE
68
KIRCHOFF 1ST LAW
CURRENT CONSERVED AT ANY JUNCTION
69
KIRCHOFF 2ND LAW
SUM OF EMFS MUST EQUAL SUM OF PD IN CLOSED LOOP
70
WHAT DO POLARISING FILTERS DO
ABSORB LIGHT TRAVELLING VERTICALLY
71
WHAT HAPPENS WHEN A WAVE TRAVELS THROUGH TWO POLARISING FILTERS
ALL LIGHT IS ABSORBED
72
WHAT TYPE OF WAVES CAN OSCILLATE IN ANY DIRECTION
TRANSVERSE
73
CAN LONGITUDINAL WAVES BE POLARISED
NO, THIS IS EVIDENCE THAT EM WAVES ARE TRANSVERSE
74
TOTAL INTERNAL REFLECTION
WHEN ALL LIGHT IS REFLECTED AT A BOUNDARY BETWEEN TWO DIFFERENT MEDIUMS
75
WHAT DO DIELECTRICS DO
INCREASE PERMITTIVITY WHICH INCREASES CAPACITANCE
76
WHAT IS FORMED AT AN OPEN TUBE END
ANTI-NODE
77
WHAT IS FORMED AT A CLOSED TUBE END
NODE
78
HOW DOES A CAPACITOR DISCHARGE
EXPONENTIALLY
79
WHAT DOES AN ANTI-NODE SHOW
CONSTRUCTIVE INTERFERENCE
80
WHAT DOES A NODE SHOW
DESTRUCTIVE INTERFERENCE
81
VISIBLE LIGHT WAVELENGTH RANGE
400-750NM
82
WHAT DOES AN 'OHMIC COMPONENT MEAN'
IT OBEYS OHMS LAW
83
WHAT IS ELECTRIC POTENTIAL
ENERGY REQUIRED TO MOVE A UNIT CHARGE FROM INFINITY TO A POINT
84
HOW DOES A CAPACITOR STORE CHARGE
ON PARALLEL PLATES
85
WHAT IS NUMBER DENSITY
HOW MANY FREE CHARGE CARRIERS ARE ABLE TO FLOW PER M3 OF A MATERIAL
86
WHAT DOES A GREATER NUMBER DENSITY MEAN
BETTER CONDUCTOR
87
WHAT IS THE TIME CONSTANT
TIME TAKEN FOR V TO DECREASE BY 37%
88
WHAT IS CAPACITANCE
CHARGE STORED PER UNIT PD
89
THERMISTOR
INCREASED TEMP = DECREASED RESISTANCE
90
LDR
INCREASED LIGHT INTENSITY = DECREASED RESISTANCE
91
HOW DO STATIONARY WAVES FORM
WHEN TWO WAVES, WHICH ARE TRAVELLING IN OPPOSITE DIRECTIONS, INTERFERE. IF THEY HAVE THE SAME FREQUENCY AND WAVELENGTH, A STATIONARY WAVE WILL BE PRODUCED
92
RESISTANCE IN SERIES EQUATION
RT = R1 + R2 + ...
93
RESISTANCE IN PARALLEL EQUATION
1/RT = 1/R1 + 1/R2 + ...
94
CAPACITANCE IN SERIES EQUATION
1/CT = 1/C1 + 1/C2 +...
95
CAPACITANCE IN PARALLEL EQUATION
CT = C1 + C2 + C3
96
FIXED RESISTOR GRAPH
Y=X
97
FILAMENT LAMP GRAPH
'S'
98
DIODE GRAPH
'J'
99
COULOMBS LAW
FORCE BETWEEN TWO OBJECTS IS DIRECTLY PROPORTIONAL TO THE PRODUCT OF THEIR CHARGES AND INVERSELY PROPORTIONAL TO THE SQUARE OF THEIR SEPARATION

PHYSICS (24 decks)

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