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A parallel-plate capacitor in air has a plate separation of1.37 cm and a plate area of 25.0cm2. The plates are charged to a potential difference of268 V and disconnected from thesource. The capacitor is then immersed in distilled water. Assumethat distilled water is an insulator.(a) What is the charge on the plates before immersion?1 pCWhat is the charge on the plates after immersion?2 pC(b) What is the capacitance after immersion?3 pFWhat is the potential difference after immersion?4 V(c) What is the change in energy of the capacitor?ΔU = Uwater -Uair = 5nJ
A pendulum makes 24 oscillations in 39s. The period is 1.6 s 1. Find the pendulum's length
An inductor has an inductance of .082H. The voltage across the inductor is 18V and has a frequency of 190 Hz. What is the current in the inductor
A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 160·Hz. Use 340·m/s for the speed of sound in air. What is the wavelength of the sound waves in the tube
A car of mass m is initially moving with a velocity v. Find the time that it takes for the car to come to rest
What is the charge before the Teflon is removed? B.)What is the potential difference before the Teflon is removed, What is the charge after the Teflon is removed
A small sphere that carries a charge of 6.45 ?C is whirled in a circle at the end of an insulating string. What average current does this rotating charge represent
A source of radio waves is emitted from the center point of our galaxy 1.9 x 104 light years away. Nine picowatts of power from these waves blanket the surface of the Earth facing the center point.
The velocity of a 1.30 kg block sliding down a frictionless inclined plane is found to be 1.60 m/s. what is the angle of the plane with respect to the horizontal
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 4.72 x 105 N. What is the work done on the jet by the catapult
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
A 10.0microF capacitor and a 5.45mH inductor are connected in series with an open switch. What is the angular frequency of the charge oscillations
A boat clashed on something and fell to the ocean floor, a few years later a few researchers sent a robot and found out that the pressure at the same level as the boat was 413 atm. The density of the seawater was 1025 kg/m cubed. what is the depht of..
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