IB Physics Topic 1 - Measurements and Uncertainties Prep Exam And Correct Answers.
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Course
IB Physics
Institution
IB Physics
Rules for the number of significant figures - Answer - non-zeros are always significant
- zeros in between non-zeros are significant
- zeros that occur to the left of a non-zero are not significant
- zeros that are to the right of the decimal point are significant
-when there isn't a decimal...
IB Physics Topic 1 - Measurements and
Uncertainties Prep Exam And Correct
Answers.
Rules for the number of significant figures - Answer - non-zeros are always significant
- zeros in between non-zeros are significant
- zeros that occur to the left of a non-zero are not significant
- zeros that are to the right of the decimal point are significant
-when there isn't a decimal point, trailing zeros are not significant
orders of magnitude - Answer a number that has been rounded to the nearest power of 10
fundamental units - Answer -length (m)
-mass (kg)
-time (s)
-electric current (A)
-thermodynamic temperature (K)
-amount of a substance (mol)
-luminous intensity (cd)
derived units - Answer units that are not fundamental
estimation - Answer a usable approximation of a true value, more precise than orders of magnitude
systematic errors - Answer the system causes a random set of measurements to be spread about a
value rather than being spread about the accepted value
what do systematic errors result from? - Answer -badly made instruments
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