Find the magnitude and direction.

What is the force on an electron moving in the negative z direction with a speed of 4.1 x 106 m/s in a magnetic field of (-3.6,5.2,-2.8) mT? Give the answer as a vector

In an experiment designed to measure the magnitude of a uniform magnetic field, electrons are accelerated from rest through a potential difference of 350 V and then enter a uniform magnetic field that is perpendicular to the velocity vector of the electrons. The electrons travel along a curved path because of the magnetic force exerted on them, and the radius of the path is measured to be 7.5 cm. (Such a curved beam of electrons is shown.)(A) What is the magnitude of the magnetic field?                                              (B) What is the angular speed of the electrons?

A calcium-40 ion has a positive charge that is double the charge of a proton, and a mass of 6.64 ✕ 10−26 kg. At a particular instant, it is moving with a speed of 5.05 ✕ 106 m/s through a magnetic field. At this instant, its velocity makes an angle of 64° with the direction of the magnetic field at the ion's location. The magnitude of the field is 0.170 T. (a) What is the magnitude of the magnetic force (in N) on the ion?   (b) What is the magnitude of the ion's acceleration (in m/s2) at this instant?

A magnesium-24 ion has a positive charge that is double the charge of a proton, and a mass of 3.98 ✕ 10−26 kg. At a particular instant, it is moving with a speed of 4.90 ✕ 106 m/s through a magnetic field. At this instant, its velocity makes an angle of 57° with the direction of the magnetic field at the ion's location. The magnitude of the field is 0.220 T. (a) What is the magnitude of the magnetic force (in N) on the ion?  N (b) What is the magnitude of the ion's acceleration (in m/s2) at this instant?  m/s2

An electron in the beam of a cathod-ray tube is accelerated by a potential difference of 2.14 kV . Then it passes through a region of transverse magnetic field, where it moves in a circular arc with a radius of 0.190 m . What is the magnitude of the field?

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 particle that has an 8.6-μC charge moves with a velocity of magnitude 4.8 × 105 m/s along the +x axis. The maximum possible magnetic force that the charge with the given speed could experience has a magnitude of 0.577 N. Find the magnitude of the magnetic field