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.

answer in T

A piece of copper wire has a resistance per unit length of 6.45E-3 omega/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.170 m. The ends of the wire are connected to a 12.0 V battery. Find the magnetic field strength at the center of the coil.

Finding parameters of a wave

Find the amplitude, period and the phase and then sketch (i) f(x) = 2 cos x + Pi (ii) f(x) = 2 sin (2x+ (Pi/2))

answer in newtons/coulombs

A magnetic field has a magnitude of 12 T. What is the magnitude of an electric field that stores the same energy per unit volume as this magnetic field?

Magnetic Force

A wire 2.80 m in length carries a current of 5.00 A in a region where a uniform magnetic field has a magnitude of 0.390 T. Calculate the magnitude of the magnetic force on the wire assuming the angle between the magnetic field and the current is (a) 60.0°, (b) 90.0°, (c) 120°.

Parallel Conductors

Two long, parallel conductors, separated by 10.0 cm, carry currents in the same direction. The first wire carries current I1 = 5.00 A and the second carries I2 = 8.00 A. (a) What is the magnitude of the magnetic field created by I1 at the location of I2? (b) What is the force per unit length exerted by I1 on I2? (c) What i ...continues