Cuz Of Newton’s third law, every actions there is an equal and opposite reaction.
The idea that objects only change their velocity due to a force is encapsulated in Newton's first law. Newton's first law: An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
Answer:
Velocity will be 
Explanation:
We have given magnetic field B = 0.00005 T
Mass m = 238 U
We know that 
So 238 U 
Radius 
We know that magnetic force is given by
which is equal to the centripetal force
So 


Answer:
Phenomena is the plural form of Phenomenon.
A phenomenon is an extraordinary occurrence or circumstance.