Physics

An airplane is flying through a thundercloud at a height of 2100 m. (A very dangerous thing to do because of updrafts, turbulence,and the possibility of electric discharge.)
If there is a charge concentration of 20.7 C at height 3280 m within the cloud and −53.1 C at height 450 m, what is the magnitude of the electric field E at the aircraft? The Coulomb constant is 8.98755 × 10^9 N � m^2/C^2.
Answer in units of V/m

So I know F=kQq/r^2
E=F/q=kQ/r^2
I am assuming I have to find two electric fields...

I have tried this problem on my own multiple times and failed. Please help.

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