What is the weight, on earth, if a book with a mass of 1.5kg 1.5n 6.5 n 11.3 n 14.7

Consider the equation for weight:

W=mg

W is the weight, m is the mass, and g is the acceleration due to gravity.

Therefore, to calculate the weight of an object, just multiply its mass by the acc. due to gravity of the location.

The acc. due to gravity on Earth is approximately 9.81 ms^-2, note that this number may change from place to place, for example, the acc. due to gravity on moon is only 1/6 of Earth's. (Sometimes the question provides g as 10, so make sure you check the instructions before!)

W = 1.5 x 9.81

   = 14.715N (≈14.7N)

Therefore, the answer to this question is the last option (or D), 14.7N.

d.) circle motion requires a force to give it a centripetal acceleration.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.