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Physics, 28.11.2020 05:50 mckenziet73

A beam contains 4.9 × 108 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 4.6 × 105 m/s. What is (a) the magnitude of the current density and (b) direction of the current density (c) what additional quantity do you need to calculate the total current i in this ion beam?

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A beam contains 4.9 × 108 doubly charged positive ions per cubic centimeter, all of which are moving...

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