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100 volts of ac are put across a 100-turn transformer primary.
1. What is the power in each coil?
2. What is the ac current drawn by the primary coil?
3. What will be the voltage output if the secondary has 200 turns?
4. If the secondary in part "a" above is connected to a flood lamp by a resistance of 50-ohms, what will be the ac current in the secondary circuit?
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.979 rad/s. Calculate the total angular momentum of the system
A uniform electric field of magnitude7.5×105 N/C points in the positive xdirection. Find the change in electric potential energy of a5.5-\mu {\rm{C}}
A 6.75kg bucket hangs at the end of a rope. you pull horizontallyand raise the bucket 4m (over a frictionless pulley)
The 2.00 kg object below is released from rest at the height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a spring of force constant k = 450 N/m. The object slides down the ramp and into the spring, compressing it a distance x b..
A potter's wheel (a solid, uniform disk) of mass 7.0 kg and radius 0.65 m spins about its central axis. Calculate the moment of inertia of the system
A 1 mF, a 2 mF, and a 3 mF capacitor are connected in parallel, the combination being connected across a 9 volt battery. Which capacitor has the greatest voltage
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Kevin has a mass of 81.2-kg and is skating with in-line skates. He sees his 15.4-kg younger brother up ahead standing on the sidewalk, find Kevin's speed just before he grabbed his brother
A parallel plate capacitor with circular plates of radius 40mm is being discharged with current of 6.0 A. At what radius (a) inside and (b) outside the capacitor gap is the magnitude of the induced magnetic field equal to 75% of its maximum value? (..
part 1you are out on your friends boat in mission bay soaking up rays and fishing for tuna. you have a big fat worm on
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.20 times 106 kg/s. If two thirds the potential energy of this water were converted to electric energy, how much power would be produced by these falls?
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field
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