answer in meters/ seconds

At a certain location, the horizontal component of the earth's magnetic field is 4.6E-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances the weight. Find the speed of the proton.

answer in seconds

A charged particle with a charge-to-mass ratio of q/m = 6.0E8 C/kg travels on a circular path that is perpendicular to a magnetic field whose magnitude is 0.71 T. How much time does it take for the particle to complete one revolution?

answer in meters

Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 10-25 kg. The ions are accelerated from rest through a potential difference of 1.30 kV. Then, a 0.490 T magnetic field causes the ions to follow a circular path. Determine the radius of the path.

answer in meters

A long, straight wire carries a current of 48 A. The magnetic field produced by this current at a certain point is 7.0E-5 T. How far is the point from the wire?

answers in AmE2 and Nm

A circular coil of wire has a radius of 0.14 m. The coil has 80 turns and a current of 15 A, and is placed in a magnetic field whose magnitude is 0.30T. Determine the moment and maximum torque it can experience.