Acylindrical bar magnet whose mass is 0.07 kg, diameter is 1 cm, length is 3 cm, and whose magnetic dipole moment is 8, 0, 0 a · m2 is suspended on a low-friction pivot in a region where external coils apply a magnetic field of 1.7, 0, 0 t. you rotate the bar magnet slightly in the horizontal plane and release it. (for small angles in radians, assume sin(θ) ≈ θ.) (a) what is the angular frequency of the oscillating magnet? (b) what would be the angular frequency if the applied magnetic field were 3.4, 0, 0 t?

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Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?