An electron moving perpendicular to a uniform magnetic field of 3.2 x 10-2 T moves in a circle of radius 0.40 cm. How fast is this electron moving? (mel = 9.11 x 10-31 kg, e = 1.60 x 10-19 C) none of the choices given O 3.0 x 106 m/s O 2.2 x 107 m/s O 1.9 x 10-2 m/s O 1.9 x 10-30 m/s

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

An electron is accelerated from rest through a potential difference V after which it enters a region having a magnetic field of magnitude B and direction perpendicular to the electron's velocity. The radius of the electron orbit in this magnetic field is given by: meV 2BN e 2m, V Be 2m. VB O 1 2m.V B e O 1 meV BV 2e O there is not enough information to determine 2m.V BV O none of these

If an electron that’s entering a magnetic field B=2.0 with a velocity of V =2.0x10^7 m/s parallel to B experiences a magnetic force F b= ????

Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.35 μC charge and flies due west at a speed of 640 m/s over the Earth’s south magnetic pole, where the 8.00 × 10-5 T magnetic field points straight up. v = 640 m/sq = 0.35 μC What is the magnitude of the magnetic force on the plane, in newtons?

None