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Students are conducting an investigation that tests the force of a magnet by using one magnet to repel a second magnet. Which tool would be needed to measure the distance the second magnet moves? A thermometer,A spring scale, A ruler, or A compass

Give the problem some thought. Which device is used to measure distance? That will be the answer.

Only one of those devices measures distance. The others meaure temperature, force and direction.

a ruler

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