5250000 determine the number of significant figures

here are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant.

3 significant figures

Explanation:

We only count the numbers that aren't zero, which is 3. If the number were instead a decimal then we would count all of the numbers including the zeros since they are after the non-zero numbers

people flirt to show their affection towards someone in a less forward way then telling. they want the other person to guess what they’re feeling to have the other person also start to like them

5.6⋅10−^19  j

do you need the explaination?