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A particle has a charge of +2.1 ?C and moves from point A to point B, a distance of 0.28 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B is EPEA - EPEB = +8.1 x 10-4 J.
(a) Find the magnitude of the electric force that acts on the particle.
(b) Find the magnitude of the electric field that the particle experiences.
A proton in the upper atmosphere moves at 8.6×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
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A particle having a mass of 0.180 gcarries a charge of ?2.34×10^?8. What are the direction of the minimum magnetic field that will balance the earth's gravitational pull on the particle
A sewing machine needle moves with a rapid vibratory motion, rather like SHM, as it sews a seam. What is the maximum needle speed
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