Two identical point charges of +Q are separated by a distance of 10cm I) calculate the work done per unit charge to bring up another charge from far away along a perpendicular bisector of the line joining two charges to the point Midway between the charges.

ii)if one of the charges in part(a)is charged from +Q to -Q, calculate the work done per unit charge to bring up a charge to the same position as above

- measure reactants precisely. ( first choice)

- stir to the reaction take place. ( second choice)

- wait patiently until the reaction completes. ( fourth choice)

- make sure to recover as much copper as possible. ( last choice)

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.