Home Page Textbooks Physics Section 1.2: Physics and Society

Physics

1st Edition

Walker

ISBN: 9780133256925

Textbook solutions

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Section 1.2: Physics and Society

Exercise 5

Step 1

1 of 2

$textbf{The metric system is convenient for science because of its simplicity.}$ It’s a decimal system of units related by multiples of 10 to each other, which essentially simplifies conversion from one unit to another.

Result

2 of 2

The metric system is convenient because of its simplicity.

Exercise 6

Step 1

1 of 2

$textbf{A bias is an inclination for a specific point of view for personal reasons,}$ and they should be avoided altogether because $textbf{biases are personal opinions, and not scientific facts.}$

Result

2 of 2

A bias is an inclination for a specific point of view for personal reasons, and, as such, should be avoided in scientific research.

Exercise 7

Solution 1

Solution 2

Step 1

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$textbf{Peer review is something that reports or articles have to undergo before being published in respected journals. A report is sent to a few experts in the field, and their job is to look for errors, oversights and biases.}$

It’s important to mention that peer review doesn’t guarantee that a report is correct, rather, it guarantees that minimum standards of the journal have been met.

Result

2 of 2

Peer review is an evaluation of an article or a report, done by experts in the field in question. Their job is to ensure there are no errors, biases or oversights in the report before publication in a scientific journal.

Result

1 of 1

Peer review is when work is given to others to find and correct errors.

Exercise 8

Solution 1

Solution 2

Step 1

1 of 2

A kilometer is 1000 meters. Thus

$boxed{15 text{km}=15 000 text{m}}$

Result

2 of 2

$$
begin{align*}
boxed{15 text{km}=15 000 text{m}}\
end{align*}
$$

Step 1

1 of 3

How many meters are in 15 kilometers?

1 kilometer = 1,000 meters

Step 2

2 of 3

Result

3 of 3

15,000 meters

Exercise 9

Solution 1

Solution 2

Step 1

1 of 2

How may kilometers are in 12,000 meters?

1 kilometer = 1,000 meters

Result

2 of 2

12 kilometers = 12,000 meters

Step 1

1 of 2

A kilometer is 1000 meters. Therefore

$boxed{12 000 text{m}=12 text{km}}$

Result

2 of 2

$$
begin{align*}
boxed{12 000 text{m}=12 text{km}}\
end{align*}
$$

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Section 1.2: Physics and Society

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