1
Q
Half life
A
The time it takes for the number of nuclei of the isotope in a sample to decay
2
Q
Count rate
A
The number of decays per second
3
Q
Half life and count rate
A
The half life can also be the time it takes for the count rate from a sample containing the isotope to fall to half of its initial level.
Physics
flashcards
Decks in class (44)
# Cards
-
Circuits37
-
Electricity27
-
Energy transfers24
-
Energy stores18
-
Atomic structure13
-
Radioactivity55
-
Half life3
-
Uses of radiation/ nuclear fusion and fission12
-
Density3
-
Particle movement15
-
Scalar and vector quantities7
-
Contact and non contact force0
-
Gravity0
-
Forces and elasticity0
-
Force, acceleration and Newton’s laws0
-
Pressure in fluids0
-
Describing motion0
-
Moments, levers and gears27
-
Momentum0
-
Irradiation and contamination17
-
Mains electricity5
-
Pressure19
-
Shit with temperature21
-
Required practical: specific heat capacity9
-
Required practical: thermal insulators12
-
Required practical: density4
-
Magnetism73
-
Waves74
-
Space0
-
Motion72
-
Forces acting on a skydiver15
-
Momentum14
-
Required practical: stretching a spring0
-
Rays65
-
Visible Light And Colour20
-
Required Practical: Ripple Tank7
-
Required Practical: Reflection And Refraction11
-
Required Practical: Infrared Radiation9
-
Required Practical: Waves In Solid8
-
Reauired Practical: Acceleration0
-
Particle movement47
-
Energy43
-
Static electricity16
-
Electricity in the real world25
