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A parallel-plate capacitor is made from two plates 12.5 on each side and 4.70 apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.10. (See the figure below(Figure 1) .) An 16.5 battery is connected across the plates.
A) What is the capacitance of this combination?
B) How much energy is stored in the capacitor?
C) If we remove the Plexiglas, but change nothing else, how much energy will be stored in the capacitor?
The radius of the Earths very nearly circular orbit around the sun is 1.5x10^11 m, find the magnitude of the earth velocity as it travels around the sun
A sample of dry air has a temperature of 273K, a volume of 4 m^3 and a pressure of 2 atmospheres, Sketch the process on a P-V diagram and mark the final values for pressure and volume after each change, Calculate the total work done.
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
Explain how far west has the sailboat traveled in 29 ? How far north has the sailboat traveled in 29?
A quarter-pound hamburger with all the fixings has a mass 220g . The food energy of the hamburger is 2.4MJ. What is the energy equivalent of the mass of the hamburger
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Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
A baseball is hit with a speed of 33.0 ms-1 at an angle of 56.0 degrees. It land's on the flat roof of a nearby building with a height of 13 m. If the ball was hit when it was 1.7 m above the ground, what horizontal distance does it travel before it ..
A person carries a long pole of mass 10kg and length 3.40 m at the angle of 60 degrees. Find the magnitude of the torque on the pole by reason of gravity.
0.700-kg ball traveling horizontally on a frictionless surface approaches a very massive stone at 20.0 m/s perpendicular to wall, What is the magnitude of the change in momentum of the stone
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