PHYS 2102 problem set 10, Exercises of Physics

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71. 59. 72. 67. ee INT The 10-turn loop of wire shown in Figure P29.71 lies in a horizontal plane, parallel to a uniform horizontal magnetic field, and carries a 2.0 A current. The loop is free to rotate about a nonmagnetic axle through the center. A 50 g mass hangs from one edge of the loop. What magnetic field strength will prevent the loop from rotating about the axle? Figure P29.71 10.0 cm, ‘Axle «e INT An electron travels with speed 1.0 x 10’ m/s between the two parallel charged plates shown in Figure P29.59. The plates are separated by 1.0 cm and are charged by a 200 V battery. What magnetic field strength and direction will allow the electron to pass between the plates without being deflected? Figure P29.59 [