Answer:
Explanation:
= Vacuum permeability = 
= Current in circular loop = 13 A
= Radius of circular loop = 13 cm
= Number of turns = 58
= Radius of coil = 0.94 cm
= Current in coil = 1.9 A
= Angle between loop and coil = 
Magnitude of magnetic field in circular loop
The magnetic field produced by the loop at its center is .
Torque is given by
The torque on the coil due to the loop .
The answer is A. The kinetic energy
Answer:
F = 0.483 N
Explanation:
Initial momentum, 
Final momentum, 
Time, t = 31 s
We need to find the force of a lead ball. We can use here the impulse momentum theorem.
F is force
So, the force is 0.483 N.
Answer:
A Magnesia
Explanation:
The word magnetism comes from the word Magnesia, which is the name for a region in Asia Minor, where fragments of Fe3O4 ore (magnetite) were found, which attracts other metal objects.
Magnetism is a physical phenomenon by which we describe the attractive or repulsive force between materials.
This phenomenon has been known for thousands of years.
Answer:
D strengths and weakneses
Explanation:
