In the figure a charged particle (either an electron or a proton) is moving righ
ID: 1282739 • Letter: I
Question
In the figure a charged particle (either an electron or a proton) is moving rightward between two parallel charged plates separated by distance d = 3.20 mm. The plate potentials are V1 = 71.0 V and V2 = 46.0 V. The particle is slowing from an initial speed of 96.0 km/s at the left plate. (a) Is the particle: 1) an electron or 2) a proton? Give the number of the correct answer. (b) What is its speed just as it reaches plate 2?
(a) In the figure a charged particle (either an electron or a proton) is moving rightward between two parallel charged plates separated by distance d = 3.20 mm. The plate potentials are V1 = ½71.0 V and V2 = ½46.0 V. The particle is slowing from an initial speed of 96.0 km/s at the left plate. (a) Is the particle: 1) an electron or 2) a proton? Give the number of the correct answer. (b) What is its speed just as it reaches plate 2? This answer has no units½ (degrees)mkgsm/sm/s^2NJWN/mkg½m/s or N½sN/m^2 or Pakg/m^3gm/s^3times Units (b) Number (a)Explanation / Answer
A)
2) proton....
B) (1/2)*m*(v^2-u^2) = q*(v2-v1) = 1.6*10^-19(-46+71) = 40*10^-19....
v^2-u^2 = 80*10^-19/1.67*10^-27....
v^2 = 47.9*10^8+u^2 = 47.9*10^8 + 92.16*10^8 =
v = 11.83*10^4 ms^-1 =
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