The position of a particular particle as a function of time is given by r = 9.0t + 8.85– 1.00t^2  m. What is   the average velocity of the particle between t=1.00s and t=3.00s?Required to answer. Single choice. (2 Points)​

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.)