KEY Appropriate responses are in boldface . Numerical answers are underlined . Physical properties can be observed without changing the composition of a material. For each nonmetric unit, suggest an appropriate metric unit that could conveniently be used instead. Explain how you can determine the mass of an object by carrying out an operation properly called weighing.
Balances depend upon the force of gravity, or weight, of an object in order to register a reading.
In a constant gravitation field the weight and mass are constantly related, so the balance can reliably convert weight to mass. It is not a base quantity because it can be expressed as the cube of the base quantity length. Thus volume is a derived quantity, because it is derived from length. Rewrite the following in simple decimal notation with the units written out in full. Tell whether each of the following numbers are or are not written in correct scientific notation.