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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Use your calculator to determine ( 8 ) 3 to three significant figures in two ways: (a) Find 8 to four significant figures; then cube this number and round to three significant figures, (b) Find 8 to three significant figures; then cube this number and round to three significant figures, (c) Which answer is more accurate? Explain.

(a)

To determine
The four significant figures of 8, cube that number, and round to three significant figures.

Explanation

Given info: The value of the 8 rounded to four significant figures is 2.828.

Explanation:

Now the value of (8)3 is,

(8)3=22

(b)

To determine
The three significant figures of 8, cube that number, and then round to three significant figures.

(c)

To determine
The more reliable significant number of the term (8)3.

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