A particle with charge Q is on the y-axis a distance A from the origin and another particle with charge q is on the x-axis a distance D from the origin. The value of D for which the x component of the force on the second particle is the greatest is:A) 0B) AC) √2AD) A/2
E) A√2

The magnets are probably damaged or there not strong enough to attached to the refrigerator

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.