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A point charge Q is located a distance r>R from the center of a nongrounded conducting spherical shell with radius R and net charge that is also
If the point charge is very far from the shell, then the shell looks essentially like a point charge Q, so the force between the two objects is repulsive.But if the point charge is very close to the shell, the the excess negative charge on the near side of the shell dominates, so the force is attractive. Show that the value of r where the force makes the transition from repulsive to attractive is r= R(1+5?)/2?(1.618)R . The factor here is the golden ratio.(In your solution, don't panic if you end up with a quintic equation. Just show that it has a factor of the form x^2-x-1.)?
Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. how much work does the tension force do on Magnus
A 0.96-m-long metal rod has a radius of 2.1 cm and a resistance of 6.3 · 10 ? 5 ?. What is the resistivity of the metal
Explain how much distance is between you and the deer when you come to a stop? What is the maximum speed you could have and still not hit the deer?
The energy provided each hour by heat to the turbine in an electric power plant is 9.5 x 10^12 J. If 6.5 x 10^12 J of energy is exhausted each hour from the engine as heat
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Find the translational speed at the top
A rectangular block of ice 9.00m on each side and 1.6 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.
A supertrain of proper length 205 m travels at a speed of 0.87c as it passes through a tunnel having proper length 74 m. How much longer is the tunnel
A camera flashtube requires 8J of energy per flash. The flash duration is 2m/ss}. What power does the flashtube use while it's flashing?
A spring has a force constant of 931N/m and an unstretched length of 8 cm. One end is attached to a post that is free to rotate in the center of a smooth table.
joseacute is running on a treadmill at 12 mph expends 1300 kilocalories of energy per hour. a find the power joseacute
What is the calculated binding energy of the electron in the ground state of (a) deuterium, (b) He+ and (c) Be+++
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 5.5, what is the ratio of their kinetic energies
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