Traditional Culture Encyclopedia - Photography and portraiture - Lightning is a common natural phenomenon, which can often be seen and heard when it happens. The human eye saw a flash of lightning, which was revealed by high-speed photography.
Lightning is a common natural phenomenon, which can often be seen and heard when it happens. The human eye saw a flash of lightning, which was revealed by high-speed photography.
① According to the formula, I = Qt = 30c5× 4× 10? 5S = 1.5× 105 a；
② obtained by formula W=UIt,
w = 8× 107v× 1.5× 105 a×5×4× 10-5s = 2.4× 109j
Therefore, the answer is:1.5×105a; 2.4× 109J。
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