Please show how to solve thisproblem, I would appreciate if the steps were broke

Question

Please show how to solve thisproblem, I would appreciate if the steps were broken downthanks!
The electron gun in atelevision tube is used to accelerate electrons (mass of9.10939 × 1031 kg and chargeof 1.60218 × 1019 C) from rest to3 × 107 m/s within a distance of1.8 cm. Whatelectric field is required? Answer in units of N/C. Please show how to solve thisproblem, I would appreciate if the steps were broken downthanks!
The electron gun in atelevision tube is used to accelerate electrons (mass of9.10939 × 1031 kg and chargeof 1.60218 × 1019 C) from rest to3 × 107 m/s within a distance of1.8 cm. Whatelectric field is required? Answer in units of N/C.

Explanation / Answer

According to work energy theorm     Work done = Change in kinetic energy           Fs =(1/2)mv2 - (1/2)mu2          (eE)s=  (1/2)mv2 - (1/2)mu2 Here e =1.6*10-19C           m=9.11*10-31kg          u =0        v =  3× 107 m/s         s =1.8*10-2m        The magnitude of the electric field is            E = [ (1/2)mv2 - (1/2)mu2]/(es) Substitute the values for E.         s =1.8*10-2m        The magnitude of the electric field is            E = [ (1/2)mv2 - (1/2)mu2]/(es) Substitute the values for E.

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