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A horizontal rod of mass $m = 40$ g and length $L = 50$ cm lies on two smooth parallel rails inclined at an angle $\alpha = 45°$ to the horizontal. The system is in a uniform magnetic field with a vertical induction vector $B = 0.2$ T (the figure is a side view, the rod is shown as a circle). What…
An electron of mass $m = 9.1 \cdot 10^{-31}$ kg and charge $q = 1.6 \cdot 10^{-19}$ C enters a magnetic field $B = 0.01$ T with speed $v = 2 \cdot 10^6$ m/s perpendicular to the induction lines. Find the period of revolution of the electron.
A charge $q = 5$ uC moves in a uniform magnetic field $B = 0.2$ T perpendicular to the induction lines with speed $v = 10^4$ m/s. The mass of the particle is $m = 2 \cdot 10^{-5}$ kg. Find the radius of the circle the particle moves along.