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Q1. A positively charged particle of mass 6.00 10-8 kg is travelling due east with a speed of 25 m/s and enters a 0.46 T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 5.40 10-3 s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic field.
(a) What is the magnitude of the magnetic force acting on the particle?
(b) What is the magnitude of the charge of the particle?
Q2. At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten nanoseconds later?
The hemisphere is placed on its flat surface, with the center directly over a 2.5 mm long line drawn on a sheet of paper. What length of line is seen by someone looking perpendicularly down on the hemisphere?
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