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Three point charges are placed on the y-axis: a charge q at y=a, a charge -2q at the origin, and a charge q at y=-1 . Such an arrangement is a special case of what is called an electric quadrupole.
1) Find the magnitude of the electric field at points on the positive x-axis.
2 ) Find the direction of the electric field at points on the positive x-axis.
3) Use the binomial expansion to find an approximate expression for the magnitude of the electric field valid for .
A wire is 2.5 m long. After applying a force to one end of thewire, it is now 2.506 m long. Calculate the tensile strain in the wire
100 MW of electrical power is delivered at 200 kV to adistribution center over a transmission line which consumers 10% ofthe total power developed by the generating station in heat losses. What is the value of the voltage fed to the transmissionlin..
A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.58c and the exploration vehicle approaching at a speed of 0.73c. What is the speed of the explo..
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 66.3° above the horizontal. By how much does the rocket clear the top of the wall
An ordinary glass is filled to the brim with 310.0mL of water at 100.0 ?C. how much water could be added to the glass
A solid weighs 300N. Calculate the pressure exerted by the solid when it is kept on a glass surface, if the area of contact is 700cm2 . solve the numerical.
Two coils are wound around the same cylindrical form. When the current in the first coil is decreasing at a rate of -0.240 A/s , the induced emf in the second coil has a magnitude of 1.65×10?3V . What is the mutual inductance of the pair of coils?
In measuring an RL circuit, you find that the total resistance of the circuit is 60 ohms and that t1/2 is 0.000836 seconds. Find the inductance of the circuit
a disk and a hoop have the same mass and same radius. Explain why the disk reaches the bottom of the incline first
A spring with spring constant 12.5 hangs from the ceiling. A 400 ball is attached to spring and allowed to come to rest. It is after that pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57...
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Determine the effective spring constant of the molecule
Walking on a Merry-Go-Round A child of mass stands at rest near the rim of a stationary merry-go-round of radius and moment of inertia. What is the child's speed with respect to the ground
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