Amagnetic field of 0.1 t forces a proton beam of 1.5 ma to move in a circle of radius 0.1 m. the plane of the circle is perpendicular to the magnetic field. of the following, which is the best estimate of the work done by the magnetic field on the protons during one complete orbit of the circle?
0 j

10-22 j

10-5 j

102 j

1020 j

0 J

Explanation:

q = Charge of particle

v = Velocity of particle

B = Magnetic flux

dr = Displacement

Force generated by magnetic field is given by

Work done by the magnetic field is given by

Here, the force exerted by the magnetic field is at  90° (perpendicular) to displacement so the work done is zero.

this isn't the answer but they're the graphs

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.