Trent builds a model electric motor. when he connects a battery to the motor, the motor spins through a half rotation and stops.
which is the most likely solution to the problem?
replacing the battery, because it is not providing current
installing new brushes, because they are not making a good connection
checking the commutator, because the current is not reversing
adding more wire coils in the armature, because the electromagnet is too weak
Answers: 1
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In a system, when potential energy decreases, then entropy also decreases. true false
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In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
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Trent builds a model electric motor. when he connects a battery to the motor, the motor spins throug...
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