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Consider a mathematical surface having the shape of a cube of edge 5cm.You do not know the electric charge or the electric field inside the cube , but you know the electric field at the surface; at the top of the cube the electric field has a magnitude of 5*105 N/C and points perpendicularly out of the cube; at the bottom of the cube, the electric field has a magnitude of 2*105 N/C and points perpendicularly into the cube; on all other faces, the electric field is tangential to the surface of the cube:
a) How much electric charge is inside the cube?
b) Can you guess what charge distribution inside (and outside) the cube would generate this kind of electric field?
If there was water in a U-Tube (full with water), with one sideclosed with a stopper, would the pressure at a point touching the stopper be greater than, less than, or equal to atmosphericpressure? Explain a little.
A traveling sinusoidal electromagnetic wave in vacuum has an electric field amplitude of 62.1 V/m. Find the intensity of this wave
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.13 x 104 m/s, and the radius of the orbit is 3.77 x 106 m. What is the orbital speed of the second satellite
an angular function is given as theta 17rad 8 rads t - 0.4 rads3t3. a what is the average angular velocity w from 0
The owner of a van installs a rear-window lens that has a focal length of -0.295 m. When the owner looks out during the lens at a person standing directly behind the van, the person appears to be now 0.242 m from the back of the van, and appears to b..
The height of a helicopter above the ground is given by h = 3.20 t3, where h is in meters and t is in seconds. At t = 1.95s, the helicopter releases a small mailbag. How long after its release does mailbag reach the ground.
The stoplight had just changed and a 1900kgCadillac had entered the intersection, heading north at 3.4m/s , How fast was the Volkswagen going just before the impact
A myopic (nearsighted) child wears contact lenses that allow her to have clear distant vision. The power of the lenses of her eyeglasses is -3.00 diopters. Without the corrective lenses, what is the far point of the girl?
Find the mass of the passenger
A car is hauling a 88 kg trailer, to whichit is connected by a spring. The spring constant is 2150 N/m. The car accelerates with an acceleration of0.33 m/s2. By how much does thespring stretch?
A revolutionary war cannon, with a mass of 2270 kg, fires a 16.5 kgball horizontally. The cannonball has a speed of 137 m/s after it has left the barrel.When the cannon was free to move across the ground (ignorefriction), the velocity of the canno..
a positive charge of 0.900u c is located in a uniform field of 9.00times104 nc. a negative charge of -0.200u c is
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