Pat Kinch used a racing cycle to travel 20.0 m/s. Suppose Kinch moved at this speed around a circular track. If the combined mass of Kinch and the
cycle was 92.0 kg and the average centripetal force was 920 N, what was
the radius in meters of the track? (Centripetal Force: Fc = m(v^2)/r ) (Write
the number answer only.)

Answerinternal combustion engine fuel;

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.

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