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Three resistors, 28, 48, and 80 ?, are connected in series, and a 0.53-A current passes through them.
(a) What is the equivalent resistance?
?
(b) What is the potential difference across the three resistors?
V
What is the potential difference
There is an 80 kg beam attached to a hinge on a wall and supported by the cord. The angle between the cord and the beam is 25 degrees. The beam is 4.5 m long., and cord is attached to the beam a metre from the beam's end. There is a 20 kg beam hangin..
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The flywheel of an engine has a moment of inertia 2.2 {rm kg} cdot {rm m} ^{2} about its rotation axis. What is its final kinetic energy.
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