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Two capacitors are identical, except that one is empty and the other is filled with a dielectric (κ = 4.50). The empty capacitor is connected to a 12.0-V battery, What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same amount of electrical energy as the empty capacitor?
A chain of movie theaters is decorated with light fixtures that when the white light passes through a transparent plate, it becomes yellow light. What color is the light reflected from the plate
A small mailbag is released from a helicopter that is descending steadily at 1.75 m/s. After 5.00 s, what is the speed of the mailbag
A subway train has a sound intensity level of 90 dB, and a rock band has a sound intensity level of 110 dB. How many times greater is the sound intensity of the band than that of the train
A car is traveling at 53.85 mph. The driver applies the brakes and the car decelerates at 1.1 m/s2. What is the stopping distance in meters
A 3.1kg block of wood sits on a table. A 3.0 gbullet, fired horizontally at a speed of 540m/s , find the speed of the block immediately after the bullet exits
When an automobile moves at 15.0 m/s, its axles experience an emf of 0.00110 v. find the length of each axle
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it, What is the power of one laser pulse
A 2600 kg truck traveling north at 38 km/h turns east and accelerates to 52 km/h. What is the change in the truck's kinetic energy? What is the magnitude of the change in the linear momentum of the truck?
The electric field on the axis of a uniformly charged ring has magnitude 400 kN/C at a point 6.4cm from the ring center. Find the ring's radius
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.260rev/s. What is the magnitude a of the resultant acceleration of a point on the tip of the blade at time t = 0.196s
A uniform cylindrical turntable of radius 1.50 m and mass 29.2 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4? rad/s. The fixed turntable bearing is frictionless. A lump of clay of mass 2.49 kg and negligible ..
A 0.954 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. What is the average current supplied to the car's motor
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