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A series circuit consists of an ac source of variable frequency, a 115 ohm resistor, a 1.25 microfarad capacitor, and a 4.50 mH inductor.
a) Find the impedance of this circuit when the angular frequency of the ac source is adjusted to the resonance angular frequency. (answer is in ohms)
b) Find the impedance of this circuit when the angular frequency of the ac source is adjusted to twice the resonance angular frequency. (answer is in ohms)
c) Find the impedance of this circuit when the angular frequency of the ac source is adjusted to half the resonance angular frequency. (answer is in ohms)
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
NASA's Cassini mission to Saturn released a probe on December 25, 2004, that landed on the Saturnian moon Titan on January 14, How many revolutions had Huygens completed when it was 130 yards from the mother ship
A 250g steel ball and a 500g steel ball each hang from 3.0-m-long strings. At rest, the balls hang side by side, barely touching. To What angle does each ball rebound
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block's speed when it is at a height of 0.25 m above the base of the slide? Explain how far is the spring compressed?
Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds, how long does it take the spinner to come to rest
A train has a mass of 5.22 ? 106 kg and is moving at 79.0 km/h. The engineer applies the brakes, What is the final speed of the train
One possibility for a low-pollution automobile is for it to use energy stored in a heavy rotating flywheel. What is the angular velocity of the flywheel when it has a full "energy charge"
What minimum coefficient of kinetic friction is required to bring the crate to a stop over a distance of 5.0 m along the lower surface.
Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronaut's feet and the axis about which the space station rotates to be greater than a certain least value. What is this least value.
What is the electric potential energy of a system that consists of two protons 2.1×10?15 m apart-as might occur inside a typical nucleus
Two long, straight wires cross each other at right angles, and each carries same current. Which of the following statements are true regarding the total magnetic field at the various points due to the two wires.
What is walking speed if the speed drops. after an exciting but exhausting lecture, a physic lecture stretch out for a nap on a bed of nails, suffering no injury and only moderate discomfort. how is this possible.
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