A block with a mass m and charge q is placed in an electric eld E : Ai l B3, Where A and B are constants. NOTE: Express your answers in terms of the given variables. (a) If the block is released from rest at the origin at time t = 0, what is its a: coordinate at time t? (b) If the block is released from rest at the origin at time t = 0, What is its y coordinate at time t? (c) If the block is released from rest at the origin at time t = 0, What is its z coordinate at time t? An electric dipole consists of charges +2e and -2e separated by 1.0 nm. It is in an electric field of strength 3.0 x 10 N/C. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to, (b) perpendicular to, and (c) antiparallel to the electric field. (a) Number i Units (b) Number i Units (c) Number i UnitsA certain electric dipole is placed in a uniform electric field of magnitude 42 N/C. The figure gives the magnitude r of the torque on the dipole versus the angle 0 between field and the dipole moment P . The vertical axis scale is set by Is = 122 x 10-28 N.m. What is the magnitude of P ? T (10-28 N . m) 0 Number i UnitsIn Figure (0) below, a particle of charge +Q produces an electric eld of magnitude Epart at point P, at distance R from the particle. In Figure (b), that same amount of charge is spread uniformly along a circular arc that has radius R and subtends an angle 9. The charge on the arc produces an electric eld of magnitude Earc at its center of curvature P. For what value of 9 (in 0) does l5arc = 0.65Epart? (Hint: You will probably resort to a graphical solution.) +Q p +Q err-2 |-R| "'2' (4;) (r5) 1} Number n Units A charge (uniform linear density = 8.4 nC/m) lies on a string that is stretched along an x axis from x = 0 to x = 2.8 m. Determine the magnitude of the electric field at x = 6.8 m on the x axis. Number i Units