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A 10 micro falad capacitor is charged so that the potential difference between its plates is 10 v. A 5 micro falad capacitor is similarly charged so that the potential difference between its plates is 5 v. The two charged capacitors are then connected to each other in parallel with positive plate connected to postive plate and negative plate connected to negative plate. How much energy is lost when the two capacitors are connected together?
A 0.19-kg stone is held 1.4 m above the top edge of a water well and then dropped into it, What is the change in gravitational potential energy of the system from release to reaching the bottom of the well
define the magnitude of the external field. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interva..
A driver travels northbound on a highway at a speed of 28.0 m/s. What frequency does the driver observe as the police car approaches
A 932 kg rocket is motionless in space. To start moving, its main engine is fired for 7 s, during which time it ejects exhaust gases at 1205 m/s. What is the approximate mass of ejected gas
A compound microscope has a barrel whose length is 16.3 cm and an eyepiece whose focal length is 1.3 cm. What focal length must the objective have so the angular magnification of the microscope is -250
A heat engine does 798.57 J of work per cycle while exhausting 163.83 J of waste heat. What is the engine's thermal efficiency in percent
A proton accelerates from rest in a uniform electric field of 524 N/C. At some later time, its speed is 2.36 × 106 m/s. What is its kinetic energy at the later time
A playground merry-go-round has a radius of 4.30 m and a moment of inertia of 245 kg/m^2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
An artillery shell was fired at a 60 degree elevation on the top of a 150 m hill. The muzzle velocity of the shell was 275 m/s. Find the maximum height of the object
an old lady carries a 4kg potted plant to the top of a 100m tall building. what is the kinetic energy of the plant when it hits the ground
questiona white billiard ball with mass mw 1.32 kg is moving directly to the right with a speed of v 2.92 ms and
The electric potential energy stored in the capacitor of a defibrillator is 58 J, What is the potential difference across the capacitor plates?
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