A 64.7 cm long straight section of wire is located entirely inside a uniform magnetic field of |B| = 0.370 T. The wire is perpendicular to the direction of the magnetic field. When a current runs through the wire a magnetic force of |F| = 0.110 N acts on that section of wire. Calculate the size of the current.

The current is  

Explanation:

From the question we are told that

    The length of the wire is  

    The magnetic field is  

      The magnetic force is  

Generally the magnetic force exerted by the field is mathematically represented as

Making I the subject we have

The angle here is  90° since the wire is perpendicular  to the direction of the magnetic field

      Substituting values

prolly a beacuse the momentuem the car has increases while going down hill

there are no atoms