1. | \(11 . 21 \times 10^{- 20}~\text{J}\) | 2. | \(3 . 09 \times 10^{- 16}~\text{J}\) |
3. | \( 6 . 21 \times 10^{- 21} ~\text{J} \) | 4. | \(5 . 97 \times 10^{- 19}~\text{J}\) |
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