An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.300 T. If the kinetic energy of the electron is 3.00 ✕ 10−19 J, find the speed of the electron and the radius of the circular path. (a) the speed of the electron  m/s (b) the radius of the circular path  ?m

An electron is moving in a circular orbit of radius 2 mm in a uniform 0.50 T magnetic field perpendicular to the velocity of the electron. What is the speed of the electron? Consider: The charge of an electron = 1.6 x 10-19 C The mass of an electron = 9.1 x 10-31 kg !3! 878

A singularly-charged ion (i.e. a neutral atom which has gained one electron) with kinetic energy of 7x10−15 J follows a circular path of radius 0.6m when placed in a magnetic field of 0.5T.   (Note that the charge of an electron is e = 1.6 x 10−19 C.)   a) Using the fact that the ion is going in a circular motion in a magnetic field, what is the ion’s momentum (in kg.m/s)? b) What is the ion’s speed (in m/s)? c) What is the ion’s mass (in kg)? d) An electric field is added to the experiment and adjusted so that the ion passes through without any deflection. What is the magnitude of this electric field (in T)?

An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.240 T. If the kinetic energy of the electron is 4.10 x 10-19 J, find the speed of the electron and the radius of the circular path. (a) the speed of the electron m/s (b) the radius of the circular path μm

Crossed electric and magnetic fields have magnitudes of 4.65 V/m and 74.5 mT. Find the speed at which electrons moving perpendicular to both fields can travel through them without being deflected?

A proton travelling at a high velocity enters a 0.45 T magnetic field and travels in a circular path of radius 0.28 m as shown. A B=0.45 T X X X X X X X X X X X B What is the kinetic energy of the proton? And which path will the proton follow? A or B? x X X X X

Starting from rest, an electron is accelerated through a region between two oppositely charged plates, as shown in Figure 1. The distance between the plates is 10 cm and the magnitude of the potential difference between them is 100 V. Immediately after exiting the region with the uniform electric field, the electron enters a region with a uniform magnetic field of 0.85 T, directed into the page. (a) Calculate the magnitude of the electric force on the electron. (b) Calculate the work done by the electric force on the electron. (c) Determine the electron's speed when it enters the magnetic field. (d) Determine the magnitude and direction of the magnetic force on the electron when it enters the magnetic field. (e) Suppose that the experiment was repeated with the locations of the positive and negative plates switched, and the electron was replaced with a proton, but nothing else was changed. Calculate R,/R., the ratio of the radius of the proton's path in the magnetic field (R,) to that…

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= The figure shows a solid metal object moving through a uniform magnetic field given by B (7.00 x 10-2T) k. The motion creates a potential difference of 1.30 x 103 V across the object, with the (unseen) bottom face negatively charged. What is the speed (m/s) of the object? d₁=5.00 x 102 m, d2= 3.00 x 102 m, d3 = 2.00 × 10² m. A do ds