Question

1. Determine the strength of the Earth's magnetic field (8.00 x 10-5T) on an airplane that acquires a static charge of 0.500 ?C traveling east at 660 m / s.

2. Determine the radius of the circular path of an electron that enters perpendicular to the magnetic field of the Earth (1.00 x 10-5 T) with a speed of 7.50 x 106 m / s.

Answer 1

1)

Unit vectors along east and north are and   respectively. Unit vector gives upward direction and gives downward direction.

Magnetic force on the airplane  

Velocity points east , so , earth's magnetic field points north, so

Magnitude of magnetic force is and direction is upward.

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2)

Radius of circular path of electron is

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