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Physics
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OpenStudy (emilyisanemoji):
Which of the following is an example of how a scientist might use a model. a. Microscopes are used to magnify a group of cells on sets of slides. b. Stopwatches measure the amount of time it takes for runners to complete a mile. 3. marbles placed inside a hollow sphere are used to describe protons in a nucleus 4. a wrench is used to tighten a nut onto a piece of wood.
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