An ideal spring of negligible mass is 13.00 long when, Ask an Expert

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Q. An airplane with a wing span of 12 m flies horizontally and due north at a speed of 60 m/s in a region where the magnetic field of the earth is 60x10^-6 T directed 60 degrees below the horizontal. What is the magnitude of the induced emf between the ends of the wing?

Q. An ideal spring of negligible mass is 13.00 long when nothing is attached to it. When you hang a 3.00- weight from it, you measure its length to be 14.50 .If you wanted to store 10.0 of potential energy in this spring, what would be its total length? Assume that it continues to obey Hooke's law.

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