Physics

Physics, 30.08.2019 00:30, aaron2113

In order for a length of copper wire or a loop of copper wire to have a magnetic field, what must they have flowing through them?

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Social Studies, 28.06.2019 16:00, momoney5746

Some of the materials for a laboratory experiment are copper wire, plastic tubing, and a pair of cotton gloves. why is the copper wire the best electrical conductor in this group of materials? ch 7 unit 3 3 points copper wire can withstand very high temperatures. copper wire allows electric charges to flow easily through it. copper wire is easy to bend. copper wire resists the flow of charged particles.

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Physics, 30.08.2019 16:30, collegebound3506

Calculate the current density needed to `levitate' a copper wire in the earth's magnetic field (that is, the current required for the lorentz force on the wire to be equal to its weight). assume that the wire is at the magnetic equator where the field is horizontal with magnitude 10-4 tesla. take the density of copper to be 8.9 g cm3 . (b) calculate the power dissipated in the wire per unit volume. will the wire become hot? the resistivity of copper is 1.7 x 108 ω.m and the heat capacity of copper is 385 j kg-1 k -1 . i have part (a) i just need part (b) answer to part (a) is j=8.73x10^8 a/m^2.

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