A cylindrical bar magnet weighing 150 g and measuring 2 cm in diameter and 10 cm in length oscillates in the earth's field and makes 10 oscillations in 40 seconds. Calculate the magnetic moment of the magnet. (B-vector of earth's field =3.0*10^(-5) T)
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Q: 150KN 80KN 90KN 50KN 25 80KN 30 60KN 30° 30° 100KN 45 46° 80KN 70KN
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