Close to the equator ecuador for instance the earths, Ask an Expert

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Close to the equator (Ecuador for instance) the Earth's magnetic field points horizontally to the north and consists of a value of B = 0.48 E-4 T.

i) Determine the magnitude of the velocity of an electron when its weight is to be precisely balanced by the magnetic force? The charge of the electron is q = -1.6 E-19 C and its mass is m = 9.11 E-31 kg.

ii) Determine the direction of the velocity of the electron?

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