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21 July, 06:26

Which of the following is an example of how a scientist might use a model

A. Marbles placed inside a hollow sphere are used to describe protons in a nucleus

B. Stopwatches measure the amount of time it takes for runners to complete a mile

C. Microscopes are used to magnify a group of cells on sets of slides

D. A wrench is used to tighten a nut onto a piece of wood

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  1. 21 July, 09:53
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    A. Marbles placed inside a hollow sphere are used to describe protons in a nucleus.

    it would be A because the other options are just the tools used in an experiment and A is actually using other objects
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