describe all electric potential energy kinetic energy and work change when to charges of opposite sign are placed near eachother 

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

that the claims meet official rules.

don't misinterpret the claims

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;