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In the classical model of a hydrogen atom, an electron orbits a proton with a kinetic energy of +13.6 ev and an electric potential energy of -27.2 eV. HINT (a) Use the kinetic energy to calculate the classical orbital speed (in m/s). m/s (b) Use the electric potential energy to calculate the classical orbital radius (in m). E Need Help? Read It Watch It Viewing Saved Work Revert to Last Response Submit Answer 6. [-/1 Points] DETAILS SERCP11 16.5.P.032. MY NOTES ASK YO Air breaks down and conducts charge as a spark if the electric field magnitude exceeds 3.00 x 106 v/m. HINT (a) Determine the maximum charge Q (in C) that can be stored on an air-filled parallel-plate capacitor with a plate area of 1.70 x 10-4 m2. U (b) A 65.0 HF air-filled parallel-plate capacitor stores charge Q ay. Find the potential difference across its plates (in V)