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A small plastic ball with a mass of 6.50 x 10?3 kg and a charge of +0.15uC is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, with the thread making an angle of 30 degrees with respect to the vertical. The area of each plate is 0.0150 m2. What is the magnitude of the charge on each plate?
Two point charges 0.606 m apart experience a repulsive force of 0.368 N. The sum of the two charges equals 1.08 10-5 C
Two parallel conductors carrying current in the same direction attract each other. If they are permitted to move toward each other, the forces of attraction do work. Where does the energy come from? Does this contradict the assertion in that magne..
A certain kind of glass has an index of refraction of 1.648 for blue light of wavelength 439 nm and an index of refraction of 1.619 for red light of wavelength 677 nm
Suppose that a structure of arbitrary complexity has a number of forces applied to it (at various points) and yet is in static equilibrium. The principle of virtual work allows one to write an equation that relates the applied forces.
The magnetic flux that passes through one turn of a 10-turn coil of wire changes to 5.0 Wb from 6.0 Wb in a time of 0.086 s. The average induced current in the coil is 185A. What is the resistance of the wire
Suppose a car is traveling at 13.0 m/s, and the driver sees a traffic light turn red. After 0.570 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 9.00 m/s2. What is the stopping distance of the car, as ..
A car traveling at 24 m/s runs out of gas while traveling up a 9 degree slope. How far will it coast before starting to roll back down.
Write down an expression for the mass of the nucleus
Determine the smallest thickness of the shaft if the allowable shear stress is ?allow=150MPa and the shaft is restricted not to twist more than 0.08rad
What is coefficient of friction between chair and floor
You are driving to the grocery store at 20. You are 100 from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 and that your car brakes with constant acceleration. What acceleration would bring you to rest r..
The radius of the circular orbit is 8.92 × 106 m. Examine the magnitude of the gravitational force exerted on the satellite by the planet.
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