Is the problem with seeing an eclipse that you have a sudden change between penumbra and regular sun? If that's the case, why can I look to the sun with my sunglasses on but I can't do it in an eclipse because it would be harmful? Even if my sunglasses have an UV filter it would be bad for my eyes to see the eclipse with them?
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Consider a compound pendulum pivoted about a fixed horizontal axis, illustrated by the force diagram on the right: # Okay, I can't figur...
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I was solving the sample problems for my school's IQ society and there are some I don't get. Since all I get is a final score, I wan...
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