In a certain velocity selector consisting of perpendicular electric and magnetic fields, the charged particles move toward the e
ast, and the magnetic field is directed to the north. What direction should the electric field point?
1 answer:
Answer:
Down.
Explanation:
In the given question, the charged particle is moving towards the east direction. Suppose east direction towards the positive x-axis.
And the magnetic field directed towards to the north direction. Suppose north direction towards the positive y-axis.
Therefore force of magnetic field can be calculate by the formula,
Therefore force of the magnetic field is in positive z-axis means in an upward direction.
Now the force on the electric field must be in the opposite direction means it is in a downward direction.
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Answer:
(a) The constants required describing the rod's density are B=2.6 and C=1.325.
(b) The mass of the road can be found using
Explanation:
(a) Since the density variation is linear and the coordinate x begins at the low-density end of the rod, we have a density given by
recalling that the coordinate x is measured in centimeters.
(b) The mass of the rod can be found by having into account the density, which is x-dependent, and the volume differential for the rod:
,
hence, the mass of the rod is 126.6 g.