IB DP Physics: HL復習筆記2.1.2 Speed & Velocity
Speed & Velocity Speed The?speed?of an object is the distance it travels every second Speed is a?scalar?quantity This is because it only contains a magnitude (without a direction) The?average s...
IB DP Physics: HL復習筆記2.1.1 Distance & Displacement
Distance & Displacement Distance?is a measure of how far an object travels It is a?scalar quantity - in other words, the direction is not important The athletes run a total distance of 300 m Co...
IB DP Physics: HL復習筆記1.3.3 Solving Vector Problems
Solving Vector Problems In physics, vectors appear in many different topic areas Specifically, vectors are often?combined?and?resolved?to solve problems when considering motion, forces, and momentu...
IB DP Physics: HL復習筆記1.3.2 Combining & Resolving Vectors
Combining & Resolving Vectors Vectors?are represented by an arrow The?arrowhead?indicates the?direction?of the vector The?length?of the arrow represents the?magnitude Combining Vectors Vectors ...
IB DP Physics: HL復習筆記1.3.1 Vector & Scalar Quantities
Vector & Scalar Quantities A?scalar?is a?quantity?which?only?has a magnitude (size) A?vector?is a quantity which has?both?a?magnitude?and a?direction For example, if a person goes on a hike in ...
IB DP Physics: HL復習筆記1.2.3 Determining Uncertainties from Graphs
Error Bars The uncertainty in a measurement can be shown on a graph as an?error bar This bar is drawn above and below the point (or from side to side) and shows the?uncertainty?in that measurement ...
IB DP Physics: HL復習筆記1.2.2 Calculating Uncertainties
Uncertainties Precision Precise measurements are ones in which there is?very little spread?about the?mean?value, in other words,?how close?the measured values are?to each other If a measurement is ...
IB DP Physics: HL復習筆記1.2.1 Random & Systematic Errors
Random & Systematic Errors Measurements of quantities are made with the aim of finding the?true value?of that quantity In reality, it is impossible to obtain the true value of any quantity as t...
IB DP Physics: HL復習筆記1.1.3 Estimating Physical Quantities
Orders of Magnitude When a number is expressed in an?order of 10, this is an?order of magnitude. Example: If a number is described as 3 × 108?then that number is actually 3 × 100 000 000 The?order ...
IB DP Physics: HL復習筆記1.1.2 Using Scientific Notation
Scientific Notation & Metric Multipliers Scientific Notation In physics,?measured quantities?cover a large range from the very large to the very small Scientific notation is a form that is base...
IB DP Physics: HL復習筆記1.1.1 SI Units
SI Base Quantities International System (S.I.) Units There is a seemingly endless number of units in Physics These can all be reduced to seven base units from which every other unit can be derived ...
IB DP Chemistry: HL復習筆記21.1.3 Structure Identification Problems
Structure Identification Problems The chemists' toolkit includes?a range of analytical techniques that enable the structure of compounds to be deduced Summary table of analytical techniques These t...
