uncertainty

Question 1

how to work out uncertainty absolute uncertainty

Answer 1

• 1 measure = uncertainty of measuring tool
• multiple values = range/2

Question 2

how to work out percentage uncertainty

Answer 2

• % uncertainty = absolute uncertainty/ mean value or measured value

Question 3

adding and subtracting quantities

Answer 3

add absolute uncertainties

Question 4

multiplying and dividing quantities

Answer 4

add percentage uncertainties

Question 5

raising quantity to a power of n

Answer 5

increase percentage uncertainty n times