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A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.) (a) Find the total charge on the sphere. Q = (b) Find the expressions for the electric field inside the sphere (r < R) and outside the sphere (r > R). ErR =
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
What is the magnitude of the acceleration of the anvil. find the mass of the planet from this information.
Calculate each of the following if the electrons exit the field with a speed of 4.45x10^6 m/s and distance between the plates is 2.07 cm.
A "door closer" is attached to the door and the top of the door frame.When the door is open and at rest, the door closer exerts a torque of 4.8 {rm N} cdot {rm m}. What is the least force that you need to apply to the door to hold it open.
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
What is the pressure inside the thermos
The coefficient of static friction between the block and table's surface is &mu s = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan & theta = n2. What is the minimum value of mass, n3 Kg t..
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. After an additional displacement, the plane is back where it started. Find the magnitude and the direction of the last leg of the journey.
A car is travelling at 15m/s while the driver spots a large pothole in the road a distance 45 m ahead. She immediately applies her brakes. Her acceleration is -9.6 m/s2. What is the stopping distance.
What is the minimum coefficient of friction between tires and road that would allow cars to take the turn without sliding off the road.
Compute the amplitude and phase at the observation screen
If the gas in a container absorbs 293 J of heat, has 106 J of work completed on it and after that does 35 J of work, what is the enhancement in the internal energy of the gas.
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