Four charges are at the corners of a square centered at the origin as follows:
q at (-a , +a); 2q at (+a , +a); 3q at (+a , -a) and 6q at (-a , -a).
A fifth charge +q is placed at the origin and released from rest.
Find its speed when it is a great distance from the origin if a = 0.6 m, q = 3.8 mC and its mass is 0.8 kg.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?