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Two equal conducting spheres, fixed in place, attract each other with an electrostatic force of 0.118 Newton when their center-to-center separation is 65.3 centimeter. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.0313 Newton. Of the initial charges on the spheres, with a positive net charge,
(a) Determine the negative charge on one of them?
(b) Determine the positive charge on the other? (Suppose the negative charge has smaller magnitude.)
rchimedes, suspect that the king?s crown is not solid gold but is instead gold-plated lead. What is the average density of the crown
What vertical height does block reach above its starting point. What speed does it have when it slides back down to its starting point.
Two equally charged insulating balls each weigh 0.10 g and hang from a common point by identical threads 30 cm long. What is the magnitude of the charge on each ball
The two stars in a binary star system have masses 1.9 x 10^30kg and 6.1 x 10^30kg. What is the speed of the heaviest star
Calculate the horsepower needed for a 1,114 kg car to climb up to an altitude of 1,097.91 m from sea level in 1.81 hours
A nuclear power plant operates at 80% of its maximum theoretical (Carnot) efficiency between temperatures of 700°, how much exhaust heat is discharged per hour
A person with a near-point distance of 32 cm is able to get a usable magnification of 12 with a particular magnifying glass. What is the friend's near-point distance
Two runners of mass 70 kg and 60 kg,respectively, have a total linear momentum of 350 kg*m/s. The heavier runner is running at 2.0m/s. Examine the possible velocitis of the lighter runner.
A string length 2.0 m and linear mass density 25.0 mg/m vibrates at a fundamental frequency of 450.0 Hz. What is the speed of the transverse strin waves
Radio astronomers detect electromagnetic radiation at 40.0MHz from an interstellar gas cloud. What is the magnetic field strength inside the gas cloud
When white light is incident on asheet of transparent material, it is found that the emerging lightis red, What is the work function of the material
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
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