An electron ( mẹ = 9.11×1031 kg. q=1.6x1091 C) moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 7.3 mT. If the speed of the electron is 1.50 x10' m/s, determine the radius of the %3D circular path ( in units of cm). Select one: A. 0.04 B. 1.17 C. 0.62 O D. 1.44 OF 17?

A proton is moving in positive x-direction with the speed of 3.2x10^5 m/s. It enters in a uniform magnetic field of 8.0-mT pointing into the page. What is the radius of the path this proton will follow in the magnetic field. (e = 1.60 × 10-19 C, M (proton) = 1.67X10^-27 kg). 8.2 m O 0.062 m 0.19 m 0.42 m

Problem 1:  Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.25 μC charge and flies due west at a speed of 670 m/s over the Earth’s south magnetic pole, where the 8.00 × 10-5 T magnetic field points straight up. What is the magnitude of the magnetic force on the plane, in newtons?

Problem 4 = The figure below shows a mass spectrometer, a device used to measure the masses of ions. Consider a positive ion of unknown mass m and charge q 4.8 x 10-19 C. The ion is first accelerated from rest through a potential difference AV inside a source. After leaving the source, it travels rightward at constant speed and enters a region of uniform magnetic field B 3.5 T directed out of the page. The ion then moves in a semicircle of radius r within the field, striking a plate at a vertical distance x = 12 m below its point of entry. Ignore the effect of gravity. (a) (b) (c) S ᎪᏤ +q O QO Determine the mass m of the ion. B out Find the potential difference AV (with correct magnitude and sign) through which the ion is accelerated if it attains a kinetic energy of 6.0 x 10-16 J upon leaving the source. Suppose it is desired that the ion travel through the magnetic-field region without being deflected (i.e., at constant speed along a straight line). In addition to the magnetic field,…