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The Coulomb force between two small, identical metallic balls, carrying charges q1 and q2, respectively, is found to be an attraction of 2.00 N when they are 1.00 m apart. The force becomes a repulsion of 1.00 N after the balls are brought in contact and placed back to their original positions. What are the values of q1 and q2 if q1<0 and |q1|<|q2|.
a nuclear power plant has an electrical power output of 1000MW and operates with an efficiency of 33%. what is the rise in temperature of the flowing water
A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A. What is the magnetic torque on the coil
A particle of charge q = e moves in a circle of radius = 0.46m with speed v = 2.800×107 m/s.Treating the circular path as a current loop with constant currentequal to its average current, find the maximum torque exerted on the loop by a uniform mag..
A crate of 31.9- tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 345. After that you must reduce your push to 247 to keep it moving at a..
A cannon fires a cannon ball at 610.37 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
a supersized 5g cockroach walks out along a 1m long uniform horizontal wood flagpole which is connected to the side of a building with a light weight cable and a very low friction bearing. how far can the bug walk out along the pole before the cabl..
A satellite in Earth orbit has a mass of 102 kg and is at an altitude of 2.10 106 m. (Assume that U = 0 as r ? ?.), What is the potential energy of the satellite-Earth system
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. The electron has negligible initial speed and a final speed of 4.60 107 m/s. Find the voltage drop from cathode to anode.
A helicopter is flying horizontally at a speed of 60 m/s and accidentally drops a storage pod from an elevation of 300 m. find the total distance the storage pod covers horizontally
Water is poured into a long glass tube closed at one end. What length of air column should be left above the water level if the column is to reinforce and resonate at a frequency of 440 Hz?
A standing wave is established in a 89 cm long string fixed at both ends. The string vibrates in 6 segments when driven at 376 Hz. What is the fundamental frequency?
a slide projector needs to create a 98-cm-high image of a 2.0 cm slide. the screen is 300 cm from the slide. what focal
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