At any point P, the total electric field due to a group of point charges equals the vector sum of the electric fields of the ind
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Answer:
The correct option is 'c': The Force vector (F) and the magnetic field vector (B) are always perpendicular.
Explanation:
The magnetic force that acts on a charged particle moving in a magnetic field is given by
As we can see that vector cross product is involved hence we conclude that Force vector (F) is always perpendicular to both the velocity vector (v) and the magnetic field vector (B) which may be at any angle with respect to each other.
Hence we conclude that vectors F and B are always perpendicular.
Answer:
distance, x = 38.17 m
Given:
velocity of the football, v = 20.5 m/s
football projected at an angle,
Period of flight, T = 2.15 s
Solution:
Since, the velocity is projected at some angle, so it can be resolved in horizontal and vertical components:
vertical component,
horizontal component,
the component responsible to cover certain distance is
Therefore, the distance covered by the football, x is given by:
⇒
x = 38.17 m