The magnetic dipole moment of earth is 8.00 ✕ 1022 j/t. assume that this is produced by charges flowing in earth's molten outer core. if the radius of their circular path is 3350 km, calculate the current they produce.

To solve the problem it is necessary to use the concepts and expressions related to the magnetic dipole moment.

It is usually defined by,

Where,

Magnetic Dipole Moment

I = Current

A = Area

In this way re-arrange for the current and replacing,

Therefore the current is  Amperes

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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