Three magnetic compasses are placed at the corners of a horizontal equilateral triangle. as in any ordinary compass, each compass
needle is a magnetic dipole constrained to rotate in a horizontal
plane. in this case the earth’s magnetic field has been precisely
annulled. the only field that acts on each dipole is that of the other
two dipoles. what orientation will they eventually assume? (use
symmetry arguments! ) can your answer be generalized for n compasses at the vertices of an n-gon?
Answers: 2
Physics, 22.06.2019 14:30
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
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Atruck with 34-in.-diameter wheels is traveling at 55 mi/h. find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:
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Jaylen is a championship runner of the school's track team. during one of his trials, his speed was measured at 15.1 m/s. find jaylen's kinetic energy during that trial if his mass is 54.6 kg.
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Physics, 23.06.2019 14:30
An elevator is initially moving upward at a speed of 12.60 m/s. the elevator experiences a constant downward acceleration of magnitude 3.60 m/s2 for 2.97 s.
Answers: 1
Three magnetic compasses are placed at the corners of a horizontal equilateral triangle. as in any o...
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