Which of these lab safety procedures is incorrect? a) no horseplay in the lab. b) follow instructions as given by teacher. c) know the fire escape route from your lab. eliminate d) always carry a textbook into the lab for checking accuracy.

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)