Descripción: My IA from 2016. Feel free to take ideas or notes from it. If you use any of it, make sure you are not directly copying or forget to exclude my name ;P.
Definition terms for IB HL EconomicsFull description
All definitions required in IB Economics in all units in the course.
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A list of definitions for physics termsFull description
H2 PHYSICS DEFINITIONS LIST Definition SECTION I: MEASUREMENT Chapter 1: Measurement Scalar A scalar quantity is one which has magnitude but no direction. Vector A vector is a quantity which has di...
IB Economics SL Review Guide 1 - The Foundations 2 - Supply and Demand 3 - Elasticities 4 - Government Intervention 5 - Market Failure 8 - Overall Economic Activity 9 - AD and AS 10 …Descripción completa
Descripción: sample business & mgmt sl ia
paper 1Full description
a powerpoint which gives questions and examples of IB CHINESE FOA, task 2
#2 according to the Diploma mandatory laboratoriesFull description
First draft of my new IB Physics IA Guide
powerpoint converted to pdf
Physics IB Notes
As the angle of the inclined plane will be increased, the height would also increase. This would increase the velocity of the cart moving down the plane. This would happen because as the hei…Full description
IB Physics IA Ideas!Full description
Physics notes for double award iGCSE Edexcel Science from 2003.Full description
AQA A-level physics notes
AQA A-level physics notes
Physics Definitions Contents Contents ................................................................................................................................. 1 2. Mechanics ......................................................................................................................... 2 3. Thermal Physics .............................................................................................................. 2 4. Oscillations and Waves ................................................................................................ 3 5. Electric Currents............................................................................................................ 3 6. Fields and Forces........................................................................................................... 4 7. Atomic & Nuclear Physics ............................................................................................ 4 8. Energy, Power and Climate Change......................................................................... 6 E. Astrophysics.................................................................................................................... 6
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2. Mechanics Term
st
Newton’s 1 law of motion
Definition
Newton’s 2nndd law of motion
An object continues in uniform motion in a straight line unless a resultant external force acts on it. Resultant force causes acceleration. acceleration The resultant force is proportional to the rate of change of momentum momentum. The resultant force is proportional to acceleration. acceleration
F=ma F=ma
Newton’s 3rd law of motion
For every action on one object there is an equal but opposite reaction on another object.
Linear momentum
The total linear momentum of a system interacting particles remains constant provided there is no resultant external forces. forces
Power (P)
The rate of which energy is transferred.
Efficiency
The ratio of useful energy to the total energy transferred .
3. Thermal Physics Term
Definition
Specific heat capacity
The energy required to raise the temperature by 1K per 1kg of the substance.
Thermal capacity (C)
The energy required to raise the temperature by 1K of a substance.
Specific latent heat (L)
The amount of energy per unit mass absorbed or released during a change of phase. phase L=Q/m
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4. Oscillations and Waves Term
Definition
Simple harmonic motion
The motion that takes place when the acceleration of an object is always directed towards, and is proportional to, its displacement from a fixed point 2
Damping
a= −ω x The presence of resistance forces on oscillations.
Under-damping
When the oscillations continue with a decreased amplitude until eventually the amplitude reaches zero and the oscillations stop.
Resonance
The state in which the frequency of the externally applied periodic force equals the natural frequency of the system.
5. Electric Currents Ter Term rm
Definition
Electric potential difference (V)
The work done per unit charge moving a positive test charge between two points in a circuit.
Electronvolt Resistance
Ohm’s Law
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Electrical energy per unit charge. A unit of energy energy. The energy gained by an electron accelerated through a potential difference of 1 volt volt. The ratio of the voltage across a conductor to the current flowing through it. R=V/I The current through a resistor is proportional to the voltage across it (as long as temperature remains constant)
6. Fields and Forces Term Term
Definition
Newton’s law of gravitation
Every single particle of mass in the universe exerts a force on every other particle of mass.
Gravitational Field Strength
The force per unit mass on a small test mass in a gravitational field.
Law of conservation of charge
Electric charge cannot be created or destroyed. It can be moved destroyed moved from one place to another. The force between two point charges is directly proportional to the product of their charge and inversely proportional to the square of their separation separation.
Coulomb’s Law
Electric Field
An area around an electric char charge where a force exists if another charge enters the field.
Electric field strength
The force per unit charge on a tiny positive test charge.
7. Atomic & Nuclear Physics Term
Definition Definition
Nucleon
The constituents of a nucleus. Protons and nucleons.
Atomic number Z
The number of protons in the nucleus.
Mass Number A
The number of nucleons (protons and nucleons) in the nucleus.
Radioactive Half-life
The time taken for half of the undecayed nuclei, remaining in a given sample, to decay. The time taken for the activity of a given sample to fall to half half of its original value. value
Unified mass unit
1/12 of the mass of a neutral carbon carbon-12 12 atom
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Mass defect
The difference between the mass of an atom and the mass of its individual nucleons. nucleons
Binding Energy
The work (energy) required to completely separate the nu nucleons cleons of an atom. The amount of energy that is released when a nucleus is assembled from its component nucleons.
Binding Energy per nucleon
The work (energy) required to completely separate the nu nucleons cleons of an atom divided by the total number of nucleons.
Fission
A heavy nucleus splits up into lighter nuclei and release energy in the process.
Fusion
Combining two light nuclei into one heavier nuclei and release energy in the process.
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8. Energy, Power and Climate Change Term
Definition
2 Law Law of Thermodynamics
It is impossible to take heat from an object and use it all to do work without losing some to the surroundings.
Degraded energy
Energy that is released to its surroundings after any process.
Energy Density
The amount of energy that can be extracted per kg of fuel.
Critical Mass
Minimum Minimum mass required for a chain chain reaction. reaction
Albedo
The fraction of radiation that is reflected back by a planet into space.
Emissivity
The ratio of power radiated per unit area by an object to the power radiated p po o ower wer unit area by a black body at the same temperature.
n
1 is a good emitter 0 is a bad emitter Surface Heat capacity C C SS
The energy required to raise the temperature of unit area of a planet’s surface by one degree. J m-2 K-1
Coefficient of volume expansion
The fractional change in volume per unit temperature change
E. Astrophysics Term
Definition
Light Year (ly)
The distance light travels in a year year..
Stellar Cluster
A concentrated group of stars of similar age because they formed from the same collapsing gas cloud.
Luminosity (L)
The total amount of energy emitted by the star per second. second
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Apparent Brightness ( b )
The amount of energy per second received per unit area on earth.
Black body
A black body absorbs all wavelengths of light and reflects none. none
Parsec (Pc)
The distance to a star that has a parallax angle of 1 arc second. second
Apparent magnitude (m)
The measure of how bright a star is from Earth Earth. rth
Absolute Magnitude (M)
The apparent magnitude a star would have it were located 10 parsecs away from earth.
Critical Density
The density required to create a flat universe i.e density of universe = critical density
