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A 2kOhm resistor and 400mH inductor are connected in series to a 1300Hz generator with an rms voltage of 15V.
a) what is the rms current in the current?
b) what capacitance must be inserted in series with the resistor and the inductor to reduce the rms current to half the value found in part (a).
A 2.00kg mass is pushed against a horizontal spring of force constant 28.0N/cm on a frictionless air table. find the greatest speed the mass reaches
A centripetal force of 205 N acts on a 1,350-kg satellite moving with a speed of 4,900 m/s in a circular orbit around a planet. What is the radius of its orbit
A frictionless plane is 11.5m long and inclined at 32.7 degrees. A sled starts at the bottom with an initial speed of 6.05 m/s up the incline. Find the initial speed of the second sled
Suppose a star with radius 8.30 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiation. Find the energy of a photon with this wavelength.
What is an electric field between the plates? Towards which plate is it directed.
A 91kg water skier floating in a lake is pulled from rest to a speed of 12 m/s in a distance of 25 m.What is the net force exerted on the skier, suppose his acceleration is constant.
q1. a steel ball of mass m is released from rest at point p. it follows a smooth curved rail to point q and finally
A 3.50-µF capacitor is fully charged by being connected to a 12.0-V battery. The fully charged capacitor is then connected to a 0.330-H inductor. Calculate the maximum current in the inductor
To stretch a certain spring by 2.20 from its equilibrium position requires 7.00 of work. What is the force constant of this spring
A 75 kg ladder that is 3.0 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.2 m from the base of the ladder. find the static frictional force between the floor and the ladder
A 1.80 mH inductor is connected in series with a dc battery of negligible internal resistance, a 0.840 k-ohm resistor, and an open switch. How long after the switch is closed will it take for the current in the circuit to reach half of its maximum..
A bird stands on a dc electric transmission line carrying 2540 A, What is the potential difference between the bird's feet
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