Chapter 1, Problem 1.94ASP

15187-1-1.94ASP

Interpretation Introduction

Interpretation:

The length of pencil should be depicted in inches in cm scale with correct significant figure. Than compared with both values and difference should be explained.

Concept Introduction:

Unit measurements: It is physical quantity can measured in many different units for height might be measured in inches, feet, yards, centimetres or other units.

SI unit: The international systems of units for some common physical quantities, for example it is measured in measured in kilograms $\left(kg\right)$, length is measured in meters $\left(m\right)$, volume is measured in cubic meters $\left(m^3\right)$, temperature is measured in kelvins $\left(k\right)$ and time is measured in seconds $\left(s\right)$.

Significant figures: The term significant figures refer to the number of important single digits in the co-efficient of an expression in scientific notation (for example 0 to 9 inclusive).

In other words precision of measurements, the value recorded should use all the digits known with certainty, plus one additional estimated digit that is usually considered uncertain by plus or minus one it should be written as.

The numbers that follow the following rules are considered to be significant.

1. All non-zero numbers are significant.

2. The zero that present between the two significant digits are also significant.

3. The zero that comes after the decimal point is considered as significant.