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An infinitely long, thin cylinder of radius R=9 cm, with a uniform charge per surface unit of σ=6.4.10-8 C/m2, is centered about the y-axis. Find the magnitude of the intensity of electric field at a radius a) r1=4 cm; b) r2=12 cm from the center of this cylinder.
An eagle glides in a diretion parallel to the ground, maintaining a constant velocity of 5.81 m?s^2. What are the new speed and direction
A child having a mass of 18 kg is seated halfway between the ends of a small, 16-kg table as shown. The coefficient of static friction is 0.20 between the ends of the table and the floor.
A car moves in a circle with constant speed. The tires do not slip on the road. What is the direction of the friction force on the tires by the road
When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work you do against the drag force of the air. how much power does she expend as she cycles
A laser beam having 652 nm wavelength and 10microns width is fired at a very thin steel plate, which has twoslits in it. Both slits are very narrow, and they are 1 micronsapart. A diffraction pattern is observed on a screen 1 meter beyondthe plate..
A 75 kg patient swallows a 30 micro Ci beta emitter wtih a half life of 5 days. The beta partiles are emitted with an average energy of .35MeV. What dose equivalent does the patient recieve
A string is stretched and fixed at both ends 426 cm apart. If the density of the string is 0.022 g/cm, and its tension is 441 N, what is the speed of the traveling waves
After landing, a jetliner on a straight runway taxis to a stop at an average velocity of -30.0km/h. what are the plane's initial velocity and acceleration
This cart rolls at 4 m/s toward a stationary 1kilogram cart. Evaluate the speed of each cart after the collision
The maximum speed of a 3 kilogram mass attached to a spring is 0.67 m/s, and the maximum force exerted on the mass is 12 Newton. Calculate the frequency of this system
a potential difference of 100 v produces a current of 3 a in a certain resistor.a what is the resistance of the
Two steel juggling balls each carry a charge of2.75 μC. There is a repulsive force between themof 1.85 N. What is the distance between the centers of the two balls?
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