Q.1] Answer in one word.
1 - Product of mass and acceleration due to gravity
2-Sum of protons and neutrons in the nucleus of an atom
3- Calculate the work done to take an object of mass 20 kg to a height of 1
(g = 9.8 m/s)
4 - Positive radical
Answers
Answer:
1. Weight is equal to the mass of an object (m) multiplied by the acceleration due to gravity (g). Like any other force, weight is measured in terms of newtons (or pounds in English units).
2. The sum of the numbers of protons and neutrons in the nucleus is called the mass number and, expressed in amu, is approximately equal to the mass of the atom. An atom is neutral when it contains equal numbers of electrons and protons.
3. dont know sorry!!
4.
When an electron is lost the group of atoms acquire a positive charge and is called a positive radical or positive ion. Depending upon the number of charges carried by radicals they are further classified as monovalent, bivalent (divalent), trivalent and tetravalent radicals or ions and so on.
Hope it helps you!!!