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14-09-2018
Physics

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What two things must a measurement include?
The first one is a number but what is the second one?

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14-09-2018

The number and units. An example would be 3cm or 4kg.

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14-09-2018

a UNIT ! If I tell you I have a piece of rope that's 17 long, you still have no idea of how far it can reach until I tell you the UNIT. There's a big difference between ropes that are 17 inches, 17 meters, and 17 miles long.

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