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shortbread
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Homework Statement
First let me say I'm new to lab reports at Uni, and I'm dreadful at them...
I'm having issues with how many sig figs to correctly display on a data table for an experiment I've done to investigate the Reynolds number. One particular step is to find Δp at different stages on a manometer using the equation Δp=(ρwater-ρatm)gΔ(Zw) with Zw being the difference between the left and right hand side of the manometer. all my Zw values are in mm; for example one of them is 33mm, using the equation for that particular value I get 323 Pa, I've looked around and it seems that the value I should display on the table is 320 Pa as the value I obtained should have the same SF as the lowest SF of the value used to calculate it. This seems ok for lower values but looks wrong at higher values because it feels like I'm rounding up and down a lot of the value. I would be thankful if someone could tell me if I'm going wrong and the correct procedure when dealing with SFs from measurements taken in experiments.
Homework Equations
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The Attempt at a Solution
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