1) Calculate the magnitude of the electric field generated (8.4x10^0) m from an electron, giving your answer in N/C to 2 significant figures. Magnitudes must be positive.

2) A non-conducting material has a charge of -(1.7x10^0) C. How many electrons were added to it, to provide this charge? Use 2 sf in your answer.

3) You are designing an electron accelerator to bring a stationary electron to a speed of (6.74x10^6) m/s in a uniform electric field. If the distance travelled is (5.228x10^-2) metres, what must the magnitude of the electric field be in N/C?

please solve asap. i trust in you.