The amount of charge flowing through a particular point in a conductor is represented by the equation Q = at^3 + bt + c, where a = 3.00 A/s^2, b = 5.00 A, and c = 8.00 A*s. Determine the current density at t = 0.700 s if the cross-sectional area of the conductor at the point of consideration is 2.50 cm^2. A/m^2
