a baseball pitcher throws a fastball at 42 meters per second. if the batter is 18 meters from the pitcher, approximately how muc
2 answers:
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To solve the problem it is necessary to use the concepts and expressions related to the magnetic dipole moment.
It is usually defined by,
Where,
Magnetic Dipole Moment
I = Current
A = Area
In this way re-arrange for the current and replacing,
Therefore the current is Amperes
Answer:
4.30 x 10⁵ N/C
Explanation:
Two positive +3.0-μC point charges at opposite corners of the square creates equal and opposite electric field at the center. hence the electric field by these two positive charges at opposite corners becomes zero.
= length of the square of side = 0.50 m
= distance of the center from each corner =
Magnitude of net electric field at the center is given as