A particle moving along a straight line can have non-zero acceleration even when its speed is zero (for instance, a ball in free fall at the top of its path). Can a particle moving in a circle have non-zero centripetal acceleration when its speed is zero? If so, give an example. If not, why not?

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).