Engineering, 29.10.2019 23:31 myvenus88
The space between the plates of a parallel-plate capacitor is filled with two slabs of linear dielectric material. the first slab has thickness a and the second slab has thickness 2a, so the total distance between the plates is 3a. slab 1 has a dielectric constant 3e0, and slab 2 has a dielectric constant of 2eo0. the free charge on the top plate is σ and the free charge on the bottom plate is -σ. (a) find the electric displacement �++⃗ in each slab. (b) find the electric field �+⃗ in each slab. (c) find the polarization �+⃗ in each slab. (d) find the potential difference between the plates. (e) find the location and amount of all bound charges. (f) now that you know all the charges (free and bound), recalculate the electric field in each slab and confirm your answer to (b).
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Engineering, 04.07.2019 03:10
What precautions should you take to prevent injuries when dealing with heavy loads?
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Engineering, 04.07.2019 18:10
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
Answers: 1
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
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Engineering, 04.07.2019 18:20
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
The space between the plates of a parallel-plate capacitor is filled with two slabs of linear dielec...
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