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A small spherical mass of 8.25 × 10-2 kg and charge of q2 = - 0.40 µC hangs from a thread. The thread is at an angle of 26.0° because the charge is repelled by another q1 = - 0.90 µC charge which rigidly hangs straight down.
(i) How many electrons would need to be removed from q1 to make it neutral?
(ii) What is the tension in the thread?
(iii) What is the distance r between the charges?
Two long, straight wires cross each other at right angles, and each carries same current. Which of the following statements are true regarding the total magnetic field at the various points due to the two wires.
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an elastic collision between two bodies in which the collision is not head-on. Projectile particle m1 is an alpha particle and target m2 is an oxygen nucleus. Find the initial speed of the alpha particle
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