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A solid conducting sphere (radius = 5.0 centimeter) has a charge of 0.25 nC distributed uniformly on its surface. If point A is placed at the center of the sphere and point B is 15 centimeter from the center, find what is the magnitude of the electric potential difference between these two points?
A 12 V battery is connected to a plate separation of 5.00 mm and a parallel-plate capacitor with a plate area of 0.20 m2. What is the charge on the capacitor? How much energy is stored in the capacitor?
After a tornado, a 0.55-g straw was found embedded 2.8 cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was speed of the straw when it hit the tree .
You're convinced the opera is almost over because of the large women singing a loud vibrato. What is the power coming from her voice
On a workday the average decibel level of a busy street is 80 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 45 every minute on a weekend, what is the decibel level of the street.
A high diver leaves the end of a 5.0 meter high diving board and strikes the water 1.3 second later. Find the final velocity with which she enters the water
A long solenoid with 9.28 turns/cm and a radius of 7.85 cm carries a current of 15.8 mA. What is the magnitude of the magnetic field there
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. What is the power loss due to resistance in the line
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
An electron gun sends electrons through a region with an electricfield of 1.5 104 N/C for a distance of 2.5cm. If the electrons start from rest, how fast are they moving after traversing the gun?
a 1.00 kg object is attached to a horizontal spring. the spring is initially stretched by 0.500 m and the object is
Earth's perihelion passed about nine hours ago. How precisely do we know the moment of closest approach of the Earth to the center of the sun? How do we make this measurement?
A 2 ?C negative charge is attracted to a large, well-anchored, positive charge. How much kinetic energy does the negatively charged object gain
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