We have that the time in seconds, minutes, and hours is
From the Question we are told that
Velocity 
Distance 
Generally the equation for the Time is mathematically given as
Therefore
And
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A magnetic field is charged electricity acting in the forced of magnatism
An alpha particle is identical to a helium nucleus. The correct option
among all the options given in the question is option "A". In case of
both the alpha particle nucleus and helium nucleus, there are two protons and two neutrons. Alpha particles are generally formed during the process of alpha decay. They can also be produced in other ways.
Answer:
45
Explanation:
because you divide volume and mass
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