(a) Interpretation: We need to change the given digits to two significant figures by round off or by addition of zero. Concept Introduction: To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

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Answer 1

Question

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

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A complete tensile test was performed on a magnesium specimen of 12 mm diameter and 30 mm length, until breaking. The specimen is assumed to maintain a constant volume. Calculate the approximate value of the actual stress at breaking. TABLE. The tensile force F and the length of the specimen are represented for each L until breaking. F/N L/mm 0 30,0000 30,0296 5000 10000 30,0592 15000 30,0888 20000 30,15 25000 30,51 26500 30,90 27000 31,50 26500 32,10 25000 32,79

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Answer 2

Question

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

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Answer 3

Question

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

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Answer 4

Question

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

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Answer 5

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 6

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 7

Chapter 2.3, Problem 2.30QAP

Interpretation Introduction

(a)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 8

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 9

Interpretation Introduction

(b)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 10

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 11

Interpretation Introduction

(c)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 12

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 13

Interpretation Introduction

(d)

Interpretation:

We need to change the given digits to two significant figures by round off or by addition of zero.

Concept Introduction:

To change the significant figure as given we can round off the number or we can add zeros to the number. To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.

Answer 14

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Answer 15

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Answer 16

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Answer 17

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