1. A body moves in such a way that it has a displacement of 12 m towards east, 5 m toward
the north and then 9 m vertically upwards. Compute the magnitude of its resultan
displacement

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.

Mass / weighthope it !

C. the electric current passes from the slip rings, through the brushes, and to the collection device.

Following the american gauge wire standards ,the larger gauge number, the slimmer the wire and thus the smaller current carrying capacity it can have.then both statements would be incorrect, as they are saying the opposite of what it is actually is.(smaller gauge numbers have thicker wires and can carry more current)