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Fields at the surfaces **
Consider the electric field at a point on the surface of (a) a sphere with radius R, (b) a cylinder with radius R whose length is infinite, and (c) a slab with thickness 2R whose other two dimensions are infinite. All of the objects have the same volume charge density ρ. Compare the fields in the three cases, and explain physically why the sizes take the order they do.
show that the horizontal distance that the aircraft engine falls is 8400 m. If the airplane somehow continues to fly as if nothing had happened. where is the engine relative to the airplane at the moment the engine hits the ground?
An air cyclone is used to separate solid particles having different masses. what is the centrifugal acceleration of the particles
Capacitors C1 = 5.0 µF and C2 = 2.0 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
A motorcycle has a constant speed of 30.0 m/s as it passes over the top of a hill whoseradius of curvature is 118 m. Find the magnitude of the normal force that acts on the cycle
A flat bi-metallic strip consists of alluminium riveted to a strip of iron. When heated, the strip will bend. Which metal will be on the outside of the curve? Why?
A playground merry-go-round has a radius of 4.20m and a moment of inertia of 255kg m2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
a 5.0 -thick layer of oil n1.46 is sandwiched between a 1.5 -thick sheet of glass and a 2.3 -thick sheet of polystyrene
A positive charge of 0.800? C is located in a uniform field of 1.20×105 N/C. A negative charge of -0.400? C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge du..
Assume you are underwater, wearing Polaroid sunglasses. Looking upward toward the water surface, Determine the intensity of the light you see
Water is circulating through a closed system of pipes in a two floor apartment. On the 1st floor, the water has a gauge pressureof 3.4x105 Pa and a speed of 2.1 m/s.
An airplane passenger carries a 215-N suitcase up the stairs, a displacement of 4.20 m vertically and 4.60 m horizontally. How much work does the passenger do?
a scuba diver breathes air from a tank which has a pressure regulator that automatically adjusts the pressure of the
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