I need help with this:

Question 2 Part 1 Not yet answered An infinite line of charge has a linear charge density of ) = 2.16 /C/m. What is the magnitude of the electric field a distance r = 56.7 cm from the line? Marked out of JE= N/C 1.00 art 2 question A charge q = 8.34 uC is placed in a constant electric field is described by E = 1.13i N/C. How much electrostatic work is done to move the charge from a1 = 3.90 m to x2 = 5.48 m? W = Part 3) What is the voltage difference between the two points in Part 2), i.e., what is the voltage differen location at 21 and final location at 12 ? AV =