Chapter 1, Problem 82RQ

Interpretation Introduction

Interpretation:

The mass of concrete needed for the job is to be calculated.

Concept Introduction:

Specific gravity is a characteristic property of a substance and is defined as the ratio of density of a substance to that of the density of some reference substance.

The prediction of the relationship between units is to be done in order to convert one unit to another. Dimensional analysis is a way to interpret and convert units of measurement of a physical quantity and to find interrelationship between them.

$\text{Since,}12\text{in}=1\text{ft, the conversion factor is:}$

$\frac{1\text{ft}}{12\text{ in}}$

$\text{Since, 1}\text{ft}=0.3048\text{m, the conversion factor is a:}$

$\frac{0.3048\text{m}}{\text{1}\text{ft}}$