A $150$ gg ball containing $4\mathrm{.}35108$ excess electrons is dropped into a $130$ mm vertical shaft. At the bottom of the shaft, the ball suddenly enters a uniform horizontal $0\mathrm{.}200$ TT magnetic field directed from east to west.

Part A

If air resistance is negligibly small, find the magnitude of the force that this magnetic field exerts on the ball just as it enters the field.

Express your answer in newtons.

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FF $=$

nothing

NN

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Part B

If air resistance is negligibly small, find the direction of the force that this magnetic field exerts on the ball just as it enters the field.

EastWestSouthNorth

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