Answer Happy

If I could get some clarification on these problems, that would
be great.
13. (44) Two point charges Q,--144 pcoul and Q144 coul are fixed in the xy plane. Note that the measurement values o are x-8 m and y-3m. Assume ngligible gravitation. Q₂ A charged particle (mass-750 pkg and charge 1500 peoul) is moved from point "a" to point "b" by an external agent (P) such the particle's kinetic energy is ob- served to increase by 375 J (from a to b). Calculate the work done on the charged particle by the external agent from point "a" to point "b". (in J) a. 277.8 326.4 c. 472.2 d. 291.6 c. 423.6 conductor 14. A point charge (Q) is located in a bollow ca- vity which is inside of a conductor; we note that the conductor has no excess charge. In the figure, let V., V.Ve and Va be the poten- tials at points "a", "b", "e" and "d" respec- tively. If Va> V, then which answer choice gives correct information? a. Q>0; V, <V, b. Q<0; V, <V, c. Q=0:V, V, d. Q>0; V, > V. ⒸQ<0; V₂ > V hollow cavity od H
45 15. A small charged particle (mass-400 µkg; charge-- 720 μcoul) travels through a region of space where the gravitational field is negligible and there are no magnetic fields; however, there is an "electrostatic" potential function in this region of space given by V(x,y) - 180x'y where x and y are in meters and V is in volts. At the point (x-1, y-1), what is the particle's acceleration (a)? (in m/sec) - 648i-972] b. =-6481 -972] c. a = -6481 +972] d. = 6481 +972] e. this is a stupid problem; hence, I won't bother to do it....got better things to do!!! THE END