Attempt 1 of 1 Submit your data table and answer these questions in the essay box below.
1. Which ruler has the greatest precision?
2. Compare your estimates with the actual measurements. How close were your estimates?

I'm not sure, i had this same question, and it doesn't make any logical sense because

A centimeter is a centimeter but in the video apparently not... for example in the video it showed the notebook as 40cm for one and the next one shows it as 14.4 cm it stayed as cm both times the size of the ruler should not change that one ruler was by 10cm the other was by 1 cm and it showed 2 completely different numbers

so therefore it doesn't make any logical sense

here was my measurements from the little video it had

try getting ahold of the teacher or whoever gave you the question its all you really can do...

hope this helped somewhat even through it probably didn't...

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility