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Hannah wants to measure the length of time it takes for a mouse's heart to beat fifty times. Which of the following tools would be the most useful for this investigation? A. stopwatch B. thermometer C.
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Hannah wants to measure the length of time it takes for a mouse's heart to beat fifty times. Which of the following tools would be the most useful for this investigation?

A.
stopwatch
B.
thermometer
C.
ruler
D.
balance

User Arms
by
4.6k points

1 Answer

4 votes
A, Stopwatch. A stopwatch measures time.
User Kara Woo
by
4.8k points
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