A helium nucleus of mass m = 6.64 x 10 27 kg and charge q = 3.20 x 10 19 C is in a constant electric field of magnitude E = 1.50 x 10 N/C pointing in the positive x-direction. Neglecting other forces, calculate the nucleus' acceleration and its displacement after 2.30 s if it starts from rest. (Indicate the direction with the sign of your answer.) HINT (a) the nucleus' acceleration (in m/52) m/s 2 (b) its displacement (in m) E