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A paper filled parallel plate capacitor (k=3.30) has an area of 0.150m^2, and the plate seperation is set at 1.00 μm. This capacitor is hooked up to a 12.0V battery in order to store energy in the device. The paper is then removed and the plate separation is doubled while the battery is still connected. Calculate the magnitude of the change in energy stored in the capacitor, and say whether the energy change is an increase or decrease.
Draw two diagrams for the situation where a moving train (with initial speed v0) collides elastically with a target train that is not intially moving, Show that the final velocity of each train will be:
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
A ball player hits a home run, and the baseball just clears a wall 20.6 m high located 121.0 m from home plate. How much time does it take for the ball to reach the wall
a muon formed high in teh earths atmosphere travels at speed v 0.990c for a distance of 4.60 km before it decays. a for
Two charges are separated by a distance d and exert mutual attractive forces F on each other. what are the new mutual forces
A certain string can withstand a maximum tension of 30 Newton without breaking. A kid ties a 250 gram stone to one end of the string. find the speed of the stone when the string breaks
At night, the pupil of a human eye can be considered to be a slit by a diameter of 8.0 mm. The diameter would be smaller in daylight. An automobile’s headlights are separated by 1.8 m. How far away can the human eye distinguish the two headlights at ..
Light of intensity I0 that has a wavelength equal to lambda = 480 nm falls normally on three slits. Each slit is 2.00 mu m wide and the center-to-center separation between it and the next slit is 4.00 mu m.
A certain conductor has 7.60 1028 free electrons per cubic meter, a cross-sectional area of 4.00 ? 10-6 m2, Find the drift speed of the electrons in the conductor
Experiments have shown that thought processes in the mind can be affected if the parietal lobe is exposed to a magnetic field with strength of 1.0 T. Compute how much current must a long
A golf ball strikes a hard, smooth floor at an angle of 20.6 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0298 kg, and its speed is 34.6 m/s just before and after striking the floor. What is the magnitude of t..
Find the position of the object to acquire real, magnified image, inverted, and virtual, upright image.
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