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How would a small bar magnet be oriented when placed at position x?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87