Two parallel conducting plates, each of area 0.30 m^2 ,are separated by a distan

Question

Two parallel conducting plates, each of area 0.30 m^2 ,are separated by a distance of 2.010^-2 m of air.One plate has charge +Q; the other has charge -Q. An electric fieldof E=2600 N/C is directed to the left inthe space between the plates, as shown in the diagram above. (b) Determine the potential difference between the plates. (c) Determine the capacitance of this arrangement of plates. Anelectron is initially located at a point midway between theplates. (d) Determine the magnitude of the electrostatic force on theelectron at this location and state its direction. right left (e) If the electron is released from rest at this location midwaybetween the plates, determine its speed just before striking one ofthe plates. Assume that gravitational effects are negligible.

Explanation / Answer

(in case you forgot part a) a) Right plate is positive. b) V = Ed    (2600)(2.0e-2) =V    V = ? c) C = (eo)(.3) /(2.0e-2)    C = ? d) E = F / q    Eq = F    F = 2600(1.60e-19)    F = ?    F = ?    direction:right e) F = ma    (answer for part d) =(9.11e-31)a    a = ?    v^2 = vi^2 + 2ax        v^2 = 0 +2(a)(.01)    v = ? Note: eo =8.85e-12 Note: eo =8.85e-12

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