Answer:
![E=576.5V/m](https://img.qammunity.org/2022/formulas/physics/college/z313m5qwytr64iw3jga5sjro2tur29t9nx.png)
Step-by-step explanation:
From the question we are told that:
Length
![l=56.0cm=0.56m](https://img.qammunity.org/2022/formulas/physics/college/93uttd77y6vpyb602b9390k6akseudfkgd.png)
Distance apart
![d=7.0mm=0.007m](https://img.qammunity.org/2022/formulas/physics/college/ypkuah0qboah3ewl9kjfqg8ktx6e669uo5.png)
Electron Transferred
![n=10^(-10)](https://img.qammunity.org/2022/formulas/physics/college/yz28irvphdqzr6ylqkjtels29lc77f2aq0.png)
Therefore
Total Charge
Since Charge on each electron is
![e=1.602*10^(-19)](https://img.qammunity.org/2022/formulas/physics/college/8kykyge6aah8vnqs7254bdsh8ax6jhd3xe.png)
Therefore
![T=1.602*10^(-19) *10^(10)](https://img.qammunity.org/2022/formulas/physics/college/h7s450fsy1x744zl04s4uxhb642v4i9dd5.png)
![T=1.602*10^(-9)](https://img.qammunity.org/2022/formulas/physics/college/j84ih042fl9beo67kso7mbggqjzkgphj8v.png)
Generally the equation for Charge density is mathematically given by
![\rho=T/A](https://img.qammunity.org/2022/formulas/physics/college/w2ikto38b437njwfsrqlkgclr41g86rkja.png)
Where
Area
![A=0.56*0.56](https://img.qammunity.org/2022/formulas/physics/college/5t1jwd9woq4vwkzihk6gu42ogaf9z052oc.png)
![A=0.3136](https://img.qammunity.org/2022/formulas/physics/college/o7gcp27mfkl5coaxxup14simiome5e1nrc.png)
Therefore
![\rho=1.602*10^(-9)/0.3136](https://img.qammunity.org/2022/formulas/physics/college/kc7mju2hug7r4jl5oa2q2kdv9t0tqh0sji.png)
![\rho=5.10*10^(-9)](https://img.qammunity.org/2022/formulas/physics/college/tmy4t6gf5mkhxu2spnzxhwbth33q6dy1ou.png)
Generally the equation for Electric Field in the capacitor is mathematically given by
![E=(\rho)/(e_0)](https://img.qammunity.org/2022/formulas/physics/college/qt0l6czfzznnbfphh8rb0938ukf1wvgvc5.png)
![E=\frac{5.10*10^(-9)}{8.85x10{-12}}](https://img.qammunity.org/2022/formulas/physics/college/9ggyxp0lkajxf1unnbc0hpj06qr6p7buby.png)
![E=576.5V/m](https://img.qammunity.org/2022/formulas/physics/college/z313m5qwytr64iw3jga5sjro2tur29t9nx.png)