Created by StemPy LabA chemist records a mass as . How many significant figures does this have?
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← A carpenter measures two planks as (12.4 ± 0.1) cm and (7.6 ± 0.2) cm wide. He writes down how much wider the first one is. Which result is right?The water level in a tank is measured as (50 ± 1) cm in the morning and (48 ± 1) cm in the evening. What is the percentage error in the fall of the level? →
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