Physics
1st Edition
ISBN: 9780133256925
Table of contents
Textbook solutions
All Solutions
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
1 of 2
$textbf{Peer review is something that reports or articles have to undergo before being published in respected journals. A report is sent to a few experts in the field, and their job is to look for errors, oversights and biases.}$
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
$$
begin{align*}
boxed{15 text{km}=15 000 text{m}}\
end{align*}
$$
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*}
$$
begin{align*}
boxed{12 000 text{m}=12 text{km}}\
end{align*}
$$
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