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Part 3. Problems ( Total 50 marks) 1. A flashlight on the bottom of a 4.00 m deep and at an angle so that the ray strikes the surface of the water 2.00 m from the point directly above the flashlight. What angle (in air) does the emerging ray make with the waters surface? (10) swimming pool sends a ray upward
2. In Figure 3, the cube is 40.0 cm on each edge. Four straight segments of wire-ab, bc, cd, and da-form a closed loop that carries a current I -5.00 A in the direction shown. A uniform magnetic field of magnitude B-0.0200T is in the positive y-direction. Determine the magnitude and direction of the magnetic force on each segment. (10) Figure3
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