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A magnetic circuit consists of an iron core of a cross sectional area of 4cm^2 in which an air gap is cut in, where a flux density of 0.9T is required. There is a leakage factor of 1.2 and fringing increases the cross sectional area of the gap by 10%.
What should be the flux density in the iron?
Assume a man is 2.0 m tall. what is the smallest height a rectangular plane mirror that will allow this man to see all of himself simultaneously? Think about multiple distances from the mirror and make sure you address the Law of Reflection in the an..
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A visitor to a lighthouse wishes to determine the height of the tower. What is the height of the tower
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