As measured on its surface, the Earth\'s magnetic field generally has a non-zero
ID: 3893441 • Letter: A
Question
As measured on its surface, the Earth's magnetic field generally has a non-zero vector component pointing geographicallyNorth. If I were to journey to a region near the Earth's center, in which direction would the Earth's magnetic field be pointing?
From the geographic South Pole towards the geographic North pole
From the geographic North Pole towards the geographic South pole
Swirling cylindrically, in the positive direction (where towards the geographic North Pole is "up")
By symmetry, it points radially in all directions.
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Two equal-but-opposite charges, with the same mass, are travelling through a region of uniform magnetic field. They both have the same initial velocity perpendicular to the direction of the magnetic field.
How will the subsequent motion of these particles be different?
The particles will be split apart by oppositely directed magnetic forces, and after a long time passes will be travelling in opposite directions.
The particles will travel in circular paths, one of which will have a smaller radius.
The particles will travel in circular paths, one of which will be clockwise and the other counter-clockwise.
The particles will travel along identical trajectories at all times.
From the geographic South Pole towards the geographic North pole
From the geographic North Pole towards the geographic South pole
Swirling cylindrically, in the positive direction (where towards the geographic North Pole is "up")
By symmetry, it points radially in all directions.
Explanation / Answer
1. C Swirling cylindrically, in the positive direction (where towards the geographic North Pole is "up")
2.A The particles will be split apart by oppositely directed magnetic forces, and after a long time passes will be travelling in opposite directions.
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