A proton moving freely in a circular path perpendicular to a constant magnetic field takes 0.800 μs to complete one revolution. Determine the magnitude of the magnetic field.

A beam of electrons moving with speed v = 2.6 × 10’m/s enter and then leave the rectangular region of the magnetic field, as shown below. The trajectory of electrons is a quarter of a circle of radius R= 0.020 m. Mass of electron m = 9.11 x 10-31 kg, charge of electron charge q = 1.6 × 10-19 C). The magnitude and direction of the magnetic field are: %3D %3D the region of the magnetic field a. 0.45 T, perpendicular to the page, into the page Ob. 0.74 T, perpendicular to the page, out of the page Oc. 0.45 T, perpendicular to the page, out of the page С. O d. 0.074 T, perpendicular to the page, into the page e. 0.68 T, perpendicular to he page, into the page

A proton moving freely in a circular path perpendicular to a constant magnetic field takes 2.00 µs to complete one revolution. Determine the magnitude of the magnetic field.

In a lightning bolt, 12 C of charge flows in a time of 5.7 x 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 29 m from the bolt?

Two long parallel wires 79.4 cm apart are carrying currents of 12.6 A and 28.1 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires?

Determine the magnitude of the force on an electron traveling 5.85×105 m/s horizontally to the east in a vertically upward magnetic field of strength 0.20 T . Express your answer to two significant figures and include the appropriate units. Determine the direction of the force on an electron.

A magnetic field is created in a laboratory with a field strength of 0.25t, pointing horizontal and due north. A proton beam is directed horizontally northwest, with the protons all moving at a speed of 6.0 x 10^4 m/s. What are the magnitude and direction of the force on the proton in the beam ?

A proton moves perpendicular to a uniform magnetic field  at a speed of 2.30  107 m/s and experiences an acceleration of 2.70  1013 m/s2 in the positive x-direction when its velocity is in the positive z-direction. Determine the magnitude and direction of the field.