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A capacitor with air between its plates is charged to 90 V and then disconnected from the battery. When a piece of glass is placed between the plates, the voltage across the capacitor drops to 37 V. What is the dielectric constant of this glass? (Assume the glass completely fills the space between the plates)
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.80{Hz}. Illustrate what is the mass of the fish, ignoring the mass of the spring.
A 0.39 V potential di?erence is maintained across a 1.7 m length of tungsten wire that has a cross-sectional area of 0.85 mm2, What is the current in the wire
assume two cans of differently coloured paint at the same temperature can be mixed together adiabatically. the second law of thermodynamics is simply not relevant to this situation
An unstrained horizontal spring has a length of 0.37 m and a spring constant of 340 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes.
A spring with spring constant 13 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 8.5cm and free. The ball makes 26 oscillations in 18 s seconds.
What is clowns total displacement
A solenoid 300 turns having a length of 25.0 cm and a diameter of 10.0 cm has a current of 0.290 A.
A 0.500 kg length of copper wire is warmed 30.0°C by the passage of electrical current. How much heat was generated by the current flow
If the rms electric field of this light is 18.0N/C at a distance of 1.50m from the bulb, what is the average total power radiated by the bulb
A bullet of mass .004 kg is fired horizontally into a wooden block of mass 1.3 kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.2. The bullet remains embedded in the block, which is observed to..
An astronaut travels at a speed of 0.93c from the Earth to a distant star that is 4.5e+17 m away. how old is she when she arrives at the star
A 170 g block connected to a light spring with a force constant of k = 4N/m oscillates on a horizontal, frictionless surface. What is the maximum magnitude of the force exerted by the spring during this motion
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