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A 120 V rms voltage at 1000 Hz is applied to an inductor, a 2 uF capacitor and a 100 ohm resistor. If the rms value of the current in this circuit is .68 A, what is the value of the inductor?
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.0 kg m2. What is the resulting angular speed of the student and the stool
An airplane needs to reach a velocity of 487 km/h to take off. On a 2000 m runway, what is the least acceleration necessary for the plane to take flight.
A fisherman casts his bait toward the river at an angle of 25 degrees above the horizontal. What was the initial velocity he launched the bait
An electric dipole consisting of charges of magnitude 1.90 nC separated by 7.00 µm is in an electric field of strength 1190 N/C, find the difference between the potential energies for dipole orientations parallel
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 720 N person climb before the ladder begins to slip?
A runner travels 2 km north, then 1 km west, then 1 km north, then 3 km east. The run took 45 minutes. What was the total path length of the run
A 2.0m length of metal wire is connected to a 1.5 V battery, and a current of 5.0mA flows through it. What is the diameter of the wire
a cylindrical resistor of radius 1.0 mm and length of 1.0 cm has resistance of 10 ohms. calculate the uniform current density in the resistor when the power of the resistor is 1 watt
A child with a mass of 55 kg is riding on a merry-go-round. If the child has a speed of 3 m/s, what is the child's angular momentum
The speed of light in a material is 0.52×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum
A free floating piston cylinder device that contains 1 kg of a 25% quality saturated mixture of water at 150C, Determine the initial and final pressure, the total energy of electrical work added to the water
An ideal gas expands at a constant pressure of 2.1 atm from 446 mL to 844 mL. Heat then flows out of the gas, What is the total heat flow into the gas
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