The density of ice is 917 kgm3 and the density of sea water, Ask an Expert

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Q. A ring whose mean diameter is 16.0 {rm cm} is wound with a closely spaced toroidal winding of 640 turns.

Compute the magnitude of the magnetic field at the center of the cross section of the windings when the current in the windings is 0.665 {rm A}.

Q. The density of ice is 917 kg/m3 and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2 m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water?

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