the value of resistance r was determined by measuring current I flowing through the resistance with error e1=+- 1.5% and power loss P in it with an error e2=+-1.0%. determine the maximum possible relative error to be expected on measuring resistance r calculated from the formula: r=P/I^2

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?