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A 55.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.793 m around the pole.
(a) Determine the force exerted by the horizontal rope on her arms.
____N
(b) Compare this force with her weight by finding the ratio of the force to her weight.
_____
The power of a certain CD player operating at 120V rms is 20.5W. determine the maximum instantaneous power
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A block of iron 3.00 kg is charged positively with the net charge of .010C. find the fraction of the electrons removed from thus iron
Three 100 ? resistors are connected as shown in the figure. The maximum power that can safely be delivered to any one resistor is 21.5 W. find the total power delivered to the combination of resistors
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A widely used "short-wave" radio broadcast band is referred to as the 25-m band. What is the frequency of a 25-m radio signal
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An electric iron connected to a 110V source draws 9A of current.show that the amount of heat generated in one minute is almost 60 kj.
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle, as measured in the laboratory
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