Read the citation below, which is from a computer file. “underground railroad.” world book online. 2012. web. 20 december 2012. which best explains why “2012” appears twice in the citation? a. the citation has been written incorrectly by the essay writer and should only include the second year. b. the citation has been written incorrectly by the essay writer and should only include the first year. c. the first appearance tells when the article was cited by the essay writer, while the second appearance tells when the article was produced. d. the first appearance tells when the article was produced, while the second appearance tells when the article was cited by the essay writer.

D

Explanation:

D. The first appearance tells when the article was produced, while the second appearance tells when the article was cited by the essay writer.

Explanation:

However the citation is missing the author's name, yet as per the question, the dual occurrence of the year is deliberate. The first appearance is hinting towards the production or publishing year of the essay while the second one tells that the version used by the author. The appropriate citation is crucial to understand the sources used by the author and assists in referring to it for a better understanding and evaluation of the text.

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.