Which statement best answers the question, "why is copper a good conductor of electricity"? a. copper atoms have a loosely held electron in their outer shell that is able to move freely to other atoms. b. copper atoms are tightly bound and are able to work with other copper atoms to exchange electrical charges. c. copper has an equal number of protons and electrons making the flow of current possible. d. copper's outer shell electrons are not balanced and must join with other copper atoms in order to be stable.

a.

explanation:

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

total distance/total time

(85 + 82)/(5+3)

167/8

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