Physics
What is the range of masses involved in the study of Physics?

10-30 kg to 1030 kg
10-30 kg to 1055 kg
10-19 kg to 1055 kg
10-19 kg to 1038 kg

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Physics
Lightning is produced when

Similar charges of electricity rush towards each other and then get repelled
Clouds strike against impurities in air and the friction burns up these impurities
Water vapour produces electricity in the clouds
Strong opposite charges in different clouds break down the resistance offered by the intervening air

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