Five students measured the same line with the ruler shown below. the results reported by the students were as follows: 4.51 cm, 4.55 cm, 4.53 cm, 4.5 cm, and 4.6 cm. even though you cannot see the line they measured, which of the recorded measurements is not correct according to the precision of the ruler?

4.6 cm is not correct according to the precision of the ruler

Explanation:

The precise value is the most nearest measurement value to the exact  value. or in other words the nearness of the measured value to the exact value is called as precision

Here , four students measure the line  and got following four measurement values-

4.51 , 4.55 , 4.53 , 4.5

These values are more or less near to the precision level of each other but the value 4.6 is an outlier with highest deviation from the average group value.

Thus, 4.6 cm is not correct according to the precision of the ruler

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.