Final answer:
To find the charge contained in a section of the line, use the formula Q = E * L, where Q is the charge, E is the electric field, and L is the length of the section. Substituting the given values, we find that the charge is 2520 N*cm/C.
Step-by-step explanation:
To find the charge contained in a section of the line of length 2.80 cm, we can use the formula:
Q = E * L
Where Q is the charge, E is the electric field, and L is the length of the section.
Substituting the given values:
|Q| = (900 N/C) * (2.80 cm)
|Q| = 2520 N*cm/C
Therefore, the charge contained in the section of the line is 2520 N*cm/C.