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.

1. 1) Calculate the magnitude of the electric field generated (8.4x10^0) μm from an electron, giving your answer in N/C to 2 significant figures. 
2.     Magnitudes must be positive.
3.  
4. 2) A non-conducting material has a charge of -(1.7x10^0) μC.  How many electrons were added to it, to provide this charge? 
5. 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.
6.  If the distance travelled is (5.228x10^-2) metres, what must the magnitude of the electric field be in N/C?
7.  
8.