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Author Question: An unusual lightning strike has a vertical portion with a current of 400 A downwards. The Earth's ... (Read 34 times) |
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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If you could remove all of your skin, it would weigh up to 5 pounds.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Asthma cases in Americans are about 75% higher today than they were in 1980.