Physics

Physics

Problem

The lengths of three metal strips to be joined end-to-end are measured as follows: l1=125.6±0.1 mml_1 = 125.6 \pm 0.1\,\text{mm}, l2=8.42±0.05 cml_2 = 8.42 \pm 0.05\,\text{cm}, l3=0.154±0.002 ml_3 = 0.154 \pm 0.002\,\text{m}. Answer the following: (a) Convert each length to centimetres. (b) Determine the total length and its absolute uncertainty. (c) Express the final result in the form length ±\pm uncertainty, rounded to the correct number of decimal places. a. Convert each length to centimetres. b. Determine the total length and its absolute uncertainty. c. Express the final result in the form length ±\pm uncertainty, rounded to the correct number of decimal places.

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