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Q. the weight of a certain crown in air is 14 N and its weight in water is 12.7 N. assuming that the uni weight of water is 9.79 KN/m3 and the crown is an alloy of gold (sp. gr. =19.3) and silver (sp. gr. = 10.5), compute the fraction of silver in the crown

Q. A bird stands on a dc electric transmission line carrying 2570 A . The line has 2.0 10-5 resistance per meter and the bird's feet are 4.0 cm apart. What is the potential difference between the bird's feet?

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