In different experimental trials, an electron, a proton, or adoubly charged oxyg

Question

In different experimental trials, an electron, a proton, or adoubly charged oxygen atom (O - -) is fired within avacuum tube. The particle's trajectory carries it through a pointwhere the electric potential is 40 V and then through a point at adifferent potential. Rank each of the following cases according tothe change in kinetic energy of the particle over this part of itsflight, from the largest increase to the largest decrease inkinetic energy.

Use only '>' or '=' symbols. If any elements are equal, showtheir equality in alphabetic order - for example: a>b=c. (a) an electron moves from 40 V to 60 V (b) an electron moves from 40 V to 20 V (c) a proton moves from 40 V to 20 V (d) a proton moves from 40 V to 10 V (e) an O- - ion moves from 40 V to 50 V (f) an O- - ion moves from 40 V to 60 V For comparison, include also in your ranking: (g) zero change (h) +10 electron volts of change in kinetic energy
(a) an electron moves from 40 V to 60 V (b) an electron moves from 40 V to 20 V (c) a proton moves from 40 V to 20 V (d) a proton moves from 40 V to 10 V (e) an O- - ion moves from 40 V to 50 V (f) an O- - ion moves from 40 V to 60 V (g) zero change (h) +10 electron volts of change in kinetic energy (g) zero change (h) +10 electron volts of change in kinetic energy (a) an electron moves from 40 V to 60 V (b) an electron moves from 40 V to 20 V (c) a proton moves from 40 V to 20 V (d) a proton moves from 40 V to 10 V (e) an O- - ion moves from 40 V to 50 V (f) an O- - ion moves from 40 V to 60 V

Explanation / Answer

f) +40 eV d) +30eV a, c, e) +20 eV b) -20 eV These are increases in KE and decreases in PE

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