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Five capacitors are connected purely in series to a 19 volt battery. Three of them have same amount of voltage across them of 4 Volts, the fourth capacitor is 2.2 times the capcitance any of the first three. If the equivalent capacitance of all five capacitors is 3.4 micro-farads, what is the stored energy in the fifth capacitor in micro-joules?
A 35 microfarad capacitor is in series with a 250 ohm resistor and10V battery. Initally a switch in the circuit is open and the capcitor is uncharged. What is the current in the circuit immediately after the switchis closed?
A television is tuned to a station broadcasting at a frequency of 7.00×10^7Hz . For best reception, the rabbit-ear antenna used by the TV should be adjusted to have a tip-to-tip length equal to half a wavelength of the broadcast signal.Find the op..
Two identical charges, each -8.00 x 10-5 C, are separated by a distance of 25.0 cm. Find the electric force between them?
A mass m1 = 15.0 kg and a mass m2 = 11.5 kg are suspended by a pulley that has a radius of 10.2 cm and a mass of 3 kg, determine the tension in the left cord
A lighthouse sweeps its beam of light around in a circle once every 7.5 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 15 s. What is the speed of the spacecraft relative to Earth?
q1. a 1.50 kg object is held 1.20 m above a relaxed massless vertical spring with a force constant of 310 nm. the
You are on an unknown planet orbiting an unknown star. When the 108 cm long camera is pointed at the star an image is formed that is 1 cm in diameter, what is the diameter of the star
In one design, a large spring with spring constant 2×10^4 N/m was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to ship's frame.
A 980 kg car is pulling a 315 kg trailer. Together the car and trailer move forward with an acceleration of 2.25 m/s2. Determine the net force on the trailer
Light of wavelength 5.0*10^-7 m in air is incident normally (perpendicular) on a doubled slit. The distance between the slit is 4.0*10^-4 m, Caculate the line density in slits/mm of the diffraction grating
A motorist suddenly notices a stalled car and slams on the brakes, negatively accelerating at 6.2. How fast was the motorist going when the brakes were first applied
Two identical point charges are fixed to diagonally opposite corners of a square that is 0.420 m on a side. How much work is done by the electric force
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